Police investigating the murder of five prostitutes in Suffolk have been talking to passengers at stations used by one of the victims.
Police officers have talked to rail passengers at Manningtree station
Anneli Alderton, 24, was captured on CCTV on a train from Harwich to Colchester on 3 December, a week before her body was found near Ipswich.
Police have been speaking to people at railway stations at Dovercourt, Manningtree, Colchester and Ipswich.
Detectives believe Ms Alderton got off the train at Manningtree at 1815 GMT.
She may have got on a train from there to Ipswich at 1843 GMT.
Officers talked to rail users between 1700 and 1900 GMT and also travelled on the 1753 GMT from Harwich to Colchester and the 1834 GMT train from Manningtree to Ipswich talking to rail travellers.
At each station they stopped everyone going in and out to see if they could help police with their inquiries.
The passengers were all shown pictures of Ms Alderton, from Colchester, Essex, with her long blonde hair loose.
They were asked if they were travelling on the same train as her two weeks ago on Sunday and whether they spotted her as she passed through Manningtree station.
They also showed people pictures of the four other dead women to see if they recognised them.
Police have also been following up leads from 400 motorists and pedestrians who were quizzed in the town's red light area.
The police declined to confirm or deny reports a senior officer had been a client of two of the murder victims.
Meanwhile, officers are sifting through information gathered from stopping motorists and pedestrians in the Burlington and Handford Road areas of Ipswich on Saturday evening.
It is believed another victim, 24-year-old Paula Clennell, was working in the area seven days earlier.
Her naked body was found in woods at Levington on 12 December.
The other murder victims are Gemma Adams, 25, Tania Nicol, 19, and Annette Nicholls, 29.
Asst Ch Const Jacqui Cheer said officers hoped to stage a reconstruction of the last known movements of one of the victims later this week.
POLICE PHONE NUMBERS
Suffolk hotline: 0800 096 1011
Crimestoppers: 0800 555 111
Det Ch Supt Gull said at a press conference on Sunday: "During the last 24 hours we have received a further 1,526 calls from the public offering information.
"I think that now takes us to somewhere in the region of 10,000 calls - that's a phenomenal response."
Suffolk Police said more than 500 officers were working on the investigation.
Meanwhile, former home office minister Fiona Mactaggart has urged ministers to carry out a plan to legalise small brothels.
The idea was included in January's prostitution strategy for England, but it has yet to be implemented.
Ms Mactaggart told BBC News the murder of five women in Suffolk showed the need for urgent changes in the law to protect prostitutes.