THE DETECTIVE leading the hunt for a chubby rapist who set upon a teenager in Ipswich said the attacker might have returned home late or agitated.

THE DETECTIVE leading the hunt for a chubby rapist who set upon a teenager in Ipswich said today the attacker might have returned home late or

agitated.

Detective Superintendent Roy Lambert urged people to think about whether a man they knew "came home late and didn't have a proper excuse, was agitated or paying a lot of attention to the news" following the rape in the early hours of last Saturday.

Police are hoping that a picture of the attacker, produced with the victim's help, will help identify him.

And an Ipswich businessman has boosted the bounty offered by the Evening Star for his capture and conviction to £2,500.

The 19-year-old victim, who comes from the Colchester area, was befriended by her attacker on a bench near Ipswich rail station before he duped her in to going to a secluded path off Stone Lodge Lane where he raped her.

The attacker, who is white and in his early 20s and appeared to have good knowledge of the area, pretended he would help the teenager find the Copdock

interchange where she had arranged to be collected by her boyfriend after an evening at Kartouche nightclub.

But instead, the man lured the teenager to a quiet, deserted lane and raped her before running off.

Police hunting the spiky haired rapist have been disappointed with the response to appeals for any one who was in the area of the railway station, Birkfield Drive and Stone Lodge Lane between midnight and 1.30am on July 28 to contact them. Even if people think they saw nothing suspicious, if they were in the area at the time they should get in touch, he said.

So far, detectives have received fewer than 20 calls.

"We know there were people about because of the inquiries we've made," said DS Lambert. "We have got descriptions of

different people and we need to identify them so we can eliminate them from inquiries."

At the time of the attack, the rapist was wearing a blue shirt with a collar and dark trousers. He was clean-shaven and around 5ft 8ins to 5ft 9ins tall, of plump build, with short spiky brown hair.

His victim, who is white, was wearing a white top, short white skirt and knee-high black boots.

Police believe passers-by may have mistaken the pair for a couple as they walked together.

Meanwhile the bounty offered for the rapist's capture received another boost today as an Ipswich businessman added to the reward.

Adrian Mitchell, managing director of PJ Print (Anglia) Ltd, offered an extra £500 on top of the £2,000 already reward already put up by the Star, for information leading to the arrest and

conviction of the sex attacker.

Mr Mitchell, who has seven daughters and stepdaughters, said he hoped to pay the cash out

sooner rather than later and before the rapist had a chance to strike again.

"With people like that about, it's not safe," he said. "The quicker he is caught, the better."

Any one with information or who was in the area at the time should contact the rape incident room on 01473 613999 or call Crimestoppers on 0800 555 111. You can also email police with information on incident.room@suffolk.police.uk