(CNN) -- Woody Harrelson defended his clash with a photographer at a New York airport Wednesday night as a case of mistaken identity -- he says he mistook the cameraman for a zombie.

Woody Harrelson says he got into a clash with a photographer because he mistook him for a zombie.

The TMZ photographer filed a complaint with police claiming the actor damaged his camera and pushed him in the face at La Guardia Airport, according to an airport spokesman.

"We're looking into this allegation and if it's warranted, we'll turn it over to the proper authorities," said Port Authority of New York and New Jersey spokesman Ron Marsico.

The photographer, who was not identified, captured the encounter on a small camera after his larger one was broken.

Harrelson, who is being sued by another TMZ photographer for an alleged assault in 2006, did not deny his involvement.

"I wrapped a movie called 'Zombieland,' in which I was constantly under assault by zombies, then flew to New York, still very much in character," Harrelson said in a statement issued Friday by his publicist.

"With my daughter at the airport I was startled by a paparazzo, who I quite understandably mistook for a zombie," he said.

TMZ.com posted two videos of the incident, including one recorded by the larger camera before it was damaged.

The first video shows the photographer following Harrelson and his daughter down an escalator and out of the terminal. It ends with Harrelson apparently reaching for the lens. What are the answers to this following set of questions: 1. Did something happen at the airport?
2. Who was involved?
3. Did he recognize the paparazzi?
4. What did he think he was?
5. Were they in Chicago?
6. Where were they?
7. Which airport?
8. Did anyone make a report?
9. Whom?
10. Who did he file it with?
11. Where does he work?
12. Has the actor encountered zombie's before?
13. Where?!
14. Was his son with him during the altercation?
15. Who was?
16. How many videos were put online?
17. What site are they on?
18. Was the name of the photographer disclosed?
19. Did he follow them on the stairs?
20. Where then?
Answer: 1. Yes
2. Woody Harrelson and a photographer
3. No
4. a zombie.
5. No
6. New York
7. La Guardia Airport
8. Yes
9. The photographer
10. With the police
11. TMZ
12. Yes
13. In a movie called 'Zombieland'
14. No
15. His daughter
16. two
17. TMZ.com
18. No
19. No
20. down an escalator

Dr.Michael Prager, a leading Botox expert, said that a growing number of women are developing something called "computer face".He also mentioned that professionals who worked long hours in front of a screen were ending up with saggy jowls , "turkey neck" and deep-set wrinkles on their forehead and around their eyes.

The Botox expert said that, of all his clients, office workers were most likely to show premature signs of ageing."If you are one of the unfortunate people who frown while you are concentrating on the screen then, over time, you will inevitably end up with frown lines," Dr.Prager said."What is perhaps more surprising is the number of women with saggy jowls because they are sitting in one position for so long.If you spend most of the time looking down then the neck muscles shorten and go saggy, eventually giving you a second neck."

Dr.Prager, who has a practice near Harley Street in London, said he encourages his clients to put a mirror next to their computer so they can see if they are frowning at the screen."When people are stressed or thinking hard about something, then they will often put on a 'grumpy face' without even knowing what they are doing.When my clients put a mirror next to their desk, they are often shocked by the angry, frowning face which stares back at them."

He said, "The women I am seeing at the moment have only been using computers at work for the last decade or so.But women in their 20s have grown up with them and use them for every single task.I think the problem is going to become much, much worse.In another ten years, they could be looking quite awful."

Dr.Prager said there were several simple steps which could avoid "computer face" such as regular screen breaks and stretching the neck muscles.And, of course, there was always Botox.He said that, after a couple of sessions of Botox, the habit of "grumpy face" could be broken. What are the answers to this following set of questions: 1. Who is most likely to show premature signs of aging?
2. Why are they likely to look that way?
3. Will the problem get worse in the future?
4. What is this problem being called?
5. Who is the professional talking about this?
6. Is there a method suggested for avoiding this?
7. Is there any other method available?
8. Where is the expert's business located?
9. Who are the clients?
10. What are they shocked by?
11. Is there any other way to fix this?
Answer: 1. office workers
2. they frown while concentrating on the screen
3. yes
4. saggy jowls
5. Dr. Michael Prager
6. put a mirror next to their computer so they can see if they are frowning at the screen
7. regular screen breaks and stretching the neck muscles
8. near Harley Street in London
9. professionals
10. the angry, frowning face which stares back at them in the mirror
11. Botox

Mariupol, Ukraine (CNN)Ukraine President Petro Poroshenko declared a ceasefire went into effect at midnight Saturday local time (5 p.m. ET) between the Ukrainian military and pro-Russian militants in the nation's east.

The separatist Donetsk People's Republic also announced the ceasefire.

But an apparent violation was reported less than 90 minutes after the ceasefire began when Ukraine's Anti-Terrorist Operation Command reported that a military post near Zolote in the Luhansk region has been shelled by mortars.

As a positive sign, CNN reporters in Ukraine reported the shelling quieted shortly after midnight.

The peace agreement signed in Minsk, Belarus, several days ago comes with many questions over how it will be implemented and whether it will stick. Mistrust is high on both sides, adding to the doubts.

The town of Debaltseve, a strategically located railroad hub in the east, is shaping up as a crucial piece of the ceasefire.

In his speech announcing the ceasefire, Poroshenko said Ukrainian troops control the town and warned militants to stay away.

"I think the fact of using the tense situation on the outskirts of Debaltseve by militants-terrorists-mercenaries poses a great threat, which can violate the ceasefire regime," Poroshenko said. "I am warning all participants of the Minsk negotiations, including the Russian Federation, which identifies itself as the guarantor of the reached agreements."

CNN's Nick Paton Walsh, reporting from the eastern town of Donetsk, said separatists claim to have encircled Debaltseve.

"Debaltseve will be a vital flashpoint for the hours ahead," he said.

Poroshenko has warned that if the separatists do not abide by the ceasefire, he will impose martial law throughout Ukraine's territory, his spokesman Andrey Zhigulin told CNN. What are the answers to this following set of questions: 1. Where was peace agreement signed?
2. How long ago?
Answer:
1. Minsk, Belarus
2. several days ago