Blasts rock Brazil police complex

The cause of the blasts is still not clear

Three blasts have torn through a police warehouse used to store weapons in the Brazilian city of Sao Paulo, killing one officer and hurting three others.

The explosions were followed by a blaze which is said to have completely destroyed the building as well as a number of vehicles used by riot police.

The cause of the blasts is still not clear, and a police investigation is under way.

It is not known how many weapons were stored there.

The state police complex - on one of the country's main highways - is near a juvenile detention centre.

Part of the highway was closed off as firefighters tackled the blaze.

Last week, a series of co-ordinated attacks on police stations and buses in Rio de Janeiro left 19 dead.