Authorities reject teenager's claim he 'escaped kidnappers' and is boy missing since 2011

Police in the US have rejected a 14-year-old's claim that he is a boy who went missing after his mother killed herself at a hotel eight years ago.

Authorities have rejected the claim by the boy that he is Timmothy Pitzen, who disappeared when he was six-years-old.

Speaking on Thursday, the FBI said DNA tests disproved the claims of the teenager who was found wandering the streets of a Kentucky town.

The unnamed teenager says he escaped two kidnappers who held him for the past seven years, according to an Ohio police report.

In 2011 Pitzen’s mother picked him up at school and is thought to have taken him to the zoo and a water park.

Three days later her body was found in a hotel following an apparent suicide.

A note left behind in the room said Timmothy was safe and in someone's care but she did not say who.

The teenager claiming to be Pitzen claimed he had escaped an unknown Red Roof Inn motel and "kept running across a bridge" into Kentucky, according to NBC News.

Speaking before police refuted the teenager's claims, Timmothy’s grandmother Alana Anderson told WISN-TV that authorities have told the family "very little".

"We just know a 14-year-old boy was found and went to the police," she said.

"We don’t want to get our hopes up and our family’s hopes up until we know something ... We’ve had false reports and false hopes before."

The FBI said in a statement its offices in Cincinnati and in Louisville, Kentucky, were working on a missing child investigation with Aurora police and departments in Cincinnati and Newport, Kentucky, and Hamilton County Sheriff’s Office in Ohio.

The body of Pitzen's mother, Amy Fry-Pitzen, 43, was found on May 15 2011.

Police investigating her death said she took steps which suggest she might have left her son with a friend.

At the time, police searched for Timmothy in Illinois, Wisconsin and Iowa.