A HEROIC policeman last night spoke of how he saved a drowning teenager from a notorious stretch of river in a daring late-night rescue.

PC Martyn Butler, who saved the 16-year-old boy after he jumped off Croft Bridge, in Hurworth Place, near Darlington, on Monday night, said: "I didn't think about it, I was just doing my job."

But last night the officer, who admits he is not a strong swimmer, was praised for his bravery.

PC Butler, 36, an officer with Durham Police for four years, sprung into action after reports of a youth jumping into the River Tees just after 11pm.

Police arrived on the scene minutes afterwards and found another youngster on the riverbank, believed to be a friend of the boy.

Officers and the police helicopter scoured the river for the teenager, searching both banks of the Tees, before catching sight of him struggling in the middle of the river, downstream from the bridge.

The area is notorious for its unpredictable tide and fast-flowing, deep waters.

The river banks are not illuminated, and at water level it was "pitch black", said officers.

PC Butler waded into the river and swam out to the boy, dragging him back to safety.

Paramedics examined the boy, whose name has not been revealed, at the scene. He was taken to Darlington Memorial Hospital, but was discharged later that night.

PC Butler, although cold and wet, did not suffer any ill effects.

Last night, the officer told The Northern Echo: "I felt I had to do it. It was clear he was in trouble, I had to go in. It was black dark and the water was very deep. The boy was very upset, but calmed down when I got to him.

"I've never done anything like this before apart from in training, but I'd do it again. The main thing was that the boy was okay."

PC Butler's bosses at Durham Constabulary hailed him as a credit to the force.

Inspector Tony Avery, from Darlington Police, said: "PC Butler has shown exemplary bravery. His actions are in the best traditions of Durham Constabulary."

Inspector Alan Watson added: "He must be complimented and commended for his very brave actions."