Nahid Almanea Colchester murder: Man might have 'followed' victim
A man who may have "followed" a woman four days before she was murdered has been urged to come forward by police.
Nahid Almanea, 31, was found with 16 stab wounds on a path near Avon Way, in Colchester, on 17 June.
The appeal comes as a knife was found in Hawthorne Avenue close to the murder scene.
The knife was found close to the parade of shops where Ms Almanea was last seen on CCTV.
Michael Cooper, who found the 4in (10cm) red-handled blade, told the BBC the knife had not been there earlier in the day.
The site is close to the Salary Brook Trail where Ms Almanea was killed.
Forensics officers have been called in to establish the relevance of the find.
Police are also seeking a man seen by witnesses walking behind two women on 13 June. One of these women, police say, might have been Ms Almanea.
Officers say the man was seen "to follow" the two women as they came out of a house in Stanley Wooster Way, Colchester.
He is described as white, in his 30s, about 5ft 10in tall with short, dark hair. He was dressed casually in dark jeans and had a local Colchester accent, police say.
Det Ch Insp Steve Worron said: "People living and working in the local area are the keys to helping us find whoever killed this bright, young woman who was a guest in our country.
"The answers lie in the local community and we will find whoever did this."