A THIEF has stolen ten potentially dangerous warning detonators.

The unusual theft took place on Sunday as a man visited relatives in Middlesbrough's Grove Hill estate.

His Renault Megane Scenic was broken into between 6.45pm and 6.55pm and a blue laptop-sized shoulder bag containing a packet of 10 detonators was stolen.

The bag had the words 'Look Out' in white lettering on its front.

The devices are normally placed on railway tracks to warn workers further down the line of any approaching trains. They are yellow and approximately two inches in diameter.

In their current state they pose no danger however if tampered with they could cause injury to anyone handling them.

Anyone who has information on the theft or who comes across the detonators is asked to contact Middlesbrough Police on 01642-303126.