premise: But these were cancelled at the last minute by Suffolk Police, prompting media speculation that the investigating team needed to carry out more tests.
  Nearly 10,000 calls from members of the public have been received by the investigating team, who are also trawling through 10,000 hours of CCTV footage in the hope of piecing together the final movements of all the women.
  They have released footage of Nicol, as well as Alderton, and police are confident that they knew what the women were wearing when they disappeared, which would help determine where they were last seen alive.
  Almost 500 officers are working in one of Britain's biggest-ever manhunts, with 350 being drafted in from 31 police forces around the country, including Northern Ireland, to help Suffolk police.
  There have been no arrests and officers say that there are no suspects in the case as yet.
   Why did the media engage in speculation?
hypothesis: these were cancelled at the last minute by Suffolk Police