At least 31 people killed in explosion at a polling station in Quetta, Pakistan

At least 31 people have been killed in an explosion outside a polling station in Pakistan, officials have said.

At least 31 people have been killed in an explosion outside a polling station in Pakistan, officials have said.

Five policemen and two children were among the victims of the attack in the city of Quetta.

There are fears the death toll could rise as many of the 35 people wounded are in a critical condition.

Terror group Islamic State has claimed responsibility for the explosion.

Hashim Ghilzai, an administration official in Quetta, said: “(The bomber) was trying to enter the polling station. When police tried to stop him he blew himself up.”

Sky News defence and security correspondent Alistair Bunkall, who is in the Pakistani city of Lahore, said the attack was “an attempt to disrupt” elections in the country as tens of millions of voters head to the polls.