Question: When was the killer of Nicola Huges born?

Context paragraphs:
Nicola Browne: Nicola Jane Browne (born 14 September 1983 in Matamata) is a New Zealand cricketer who plays for the New Zealand in the women's one-day internationals and plays for the Northern Districts in the State League.  She played in the 2005 and 2009 Women's Cricket World Cups, and was player of the series in the 2010 ICC Women's World Twenty20 tournament.Nicola Brown along with Sarah Tsukigawa set the highest 7th wicket partnership in the history of Women's One Dayers(104*)Also she set the highest record 6th wicket partnership in the Women's World Cup history(139*) along with Sara McGlashanIn January 2015, Nicola announced her retirement from all forms of cricket.

Nikki Payne (rower): Nicola "Nikki" Payne (born 26 July 1966), also known as Nicola Mills and Nicola Payne-Mills, is a former New Zealand rower.

Nicola da Guardiagrele: Nicola da Guardiagrele (born Nicola Gallucci or Nicola di Andrea di Pasquale; c. 1385/1390 - c. 1462) was an Italian late medieval goldsmith, painter and etcher.

Nicola Skrastin: Nicola Alexandra Skrastin (born 16 September 1992), is a Scottish hockey player.  Nicola was born in the Vale of Leven in Argyll and Bute and grew up close to the town of Helensburgh.  She attended Rhu Primary school and then Lomond School.  Skrastin's potential was first noted by school PE teacher Margery Taylor, who urged her to start playing in the Glasgow hockey scene.  As captain of the School 1st XI, Nicola balanced the pressures of her school life and early hockey career.  Skrastin obtained a place to study Geography and Business at the University of Glasgow and has since taken a year out from her studies in order to train full-time with the Scottish team.

Nico von Lahnstein: Nicola "Nico" von Lahnstein (born as Nicola Brandner) is a fictional character of the German soap opera "Verbotene Liebe (Forbidden Love)".  The character has been played by actress Verena Zimmermann and made her first appearance on October 1, 2002.  Much of the character's history revolves around her rebellious teenage years, being the illegitimate daughter of Johannes von Lahnstein, the deep connection shared with her sister Jana, her romance with Andi Fritzsche and marriage to Philipp zu Hohenfelden.

Murders of Nicola Hughes and Fiona Bone: On 18 September 2012, Police Constables Nicola Hughes and Fiona Bone, two Greater Manchester Police officers, were killed by Dale Cregan in a gun and grenade ambush while responding to a report of a burglary in Greater Manchester, England.

Joey Mellen: Joseph "Joey" Mellen (born September 1939) is the British-born author of "Bore Hole", a book about his attempts at self-trepanation, influenced by Bart Huges, and his eventual success with the help of his partner Amanda Feilding.  Mellen then filmed Amanda's own self-trepanation for a documentary entitled "Heartbeat in the Brain".

Nicola McLean: Nicola June McLean (born 16 September 1981) is an English glamour model, television, and media personality.  She was a contestant in "I'm a Celebrity... Get Me Out of Here! " in 2008, and "Celebrity Big Brother" in 2012 and again in 2017, which was an All-Star vs. New Star season.  Nicola returned as an All-Star and left the house on the final night in fifth place, beating her original season's position of seventh place.

Dale Cregan: Dale Christopher Cregan (born 6 June 1983) is an English convicted drug-dealer and murderer who was sentenced to a whole life order in prison for four counts of murder (including the killing of two police officers) and three separate counts of attempted murder, meaning that he will never be released from prison.

Lewis Nicola: Lewis Nicola (1717 – August 9, 1807) was an Irish-born American military officer, merchant, and writer who held various military and civilian positions throughout his career.  Nicola is most notable for authoring the Newburgh letter, which urged George Washington to assume a royal title.  Born in Dublin, Ireland, Nicola had been an officer in the British Army, serving in Europe before immigrating to the Thirteen Colonies.  Establishing a residence in Philadelphia with his family, Nicola opened a library in 1767 and was active in colonial philosophical organizations.  As a result of his work to establish the American Philosophical Society, he was elected as one of its curators.  When the American Revolution broke out, Nicola offered his services to the colonial government, which eventually appointed him to various positions with local forces.

Supporting paragraphs: Murders of Nicola Hughes and Fiona Bone Dale Cregan
Answer: 6 June 1983