An officer from Greater Manchester Police guards the last confirmed sighting of Linzi Ashton murder suspect Michael Cope.
He was last seen crossing this bridge near The Moorings public house in Boothstown near Worsley.
Police in Manchester say murder suspect Michael Cope could be using the canal network in Salford to evade capture.
Cope, 28, who police believe could be sleeping rough, is wanted over the murder of mum-of-two Linzi Ashton.
Three men are now being questioned by detectives in the manhunt for Michael Cope, wanted in connection with the murder of Linzi Ashton.
The mum-of-two was found dead at her home in Winton on Saturday evening.
A post mortem found she died as a result of pressure to the neck and multiple injuries.
Officers have been granted more time to question the 25-year-old man arrested on Monday.
Late on Tuesday night officers arrested two other men, aged 26 and 27. All three remain in custody on suspicion of assisting an offender.
Greater Manchester Police and Crimestoppers, the independent charity, have also announced a £5,000 reward for anyone who has information leading to the arrest and conviction of Michael Cope.
Anyone with any information is asked to call police on 0161 856 5092 or call the independent charity Crimestoppers anonymously on 0800 555 111.
Detectives looking for Michael Cope have issued CCTV footage of him buying snacks hours before it is believed Linzi Ashton was murdered.
Mother-of-two Linzi was found at her home on Westbourne Road, Winton by relatives shortly before 6pm on Saturday 29 June 2013.
Her ex-partner Michael Cope is being sought in connection with her murder.
The footage released shows Cope buying snacks and drinks from Best One on Liverpool Road, Eccles at about 10.45pm on Friday 28 June 2013.