Warning over stolen WA railway explosives

Explosives stolen from a parked vehicle in Perth could cause serious injury if not handled carefully, police say.

The 54 railway detonators, which are strapped to railways and explode with a loud bang when driven over, were stolen on Monday night in the southern suburb Parmelia.

A police spokesman said the detonators were in a silver carry case marked "Railway Track Detonators" and "Explosives".

In 2012, News Limited reported that a 15-year-old boy lost his left hand when a railway detonator blew up in his face after he hit it with a hammer.

Anyone who sees the items is advised not to touch them and call police immediately on 131 444.