CCTV appeal over 'animal semen' attacks
Police have released CCTV footage of a man wanted after a substance thought to be animal semen was thrown on schoolgirls in Greater Manchester.
Detectives have said four teenagers were targeted between November 2009 and January 2010 in Unsworth, Whitefield, Bury town centre and Prestwich.
Each time a girl was approached by a man and later discovered a sticky white substance on her skirt or tights.
Anyone who recognises the man in the CCTV is being urged to contact police.
The offender is described as being a white man aged between 25 and 35.
At the time of the attacks he was carrying a bag and on a couple of occasions he was wearing a hat.
Following a Greater Manchester Police appeal in February, two men were arrested over the incident but they were both released without charge.
Det Ch Insp Lynne Vernon, from Bury CID, said: "There have been no new incidents since January but we will not give up on trying to find this person.
"I'd ask people to take a good look at the footage and if he looks familiar, please contact me.
"All information given to my team can be treated in the strictest of confidence and we can quickly eliminate anyone who is not responsible, like we have already done with two names that were given to us by the public following our first appeal."
She added: "I do not want anyone to be unnecessarily frightened - incidents like this are extremely rare and we will continue working hard to ensure that anyone who does act in this way is dealt with appropriately."
Police were investigating six reports but two of those have since been ruled out.
The white substance is believed to be animal semen although laboratory tests proved inconclusive.