Gunmen kill 45 in Pakistan City

Pakistan: At least 45 people have been killed and 13 injured in a gun attack on a bus carrying Ismaili Shia Muslims in the Pakistani city of Karachi, police say.

Grief-stricken relatives rushed to the hospital when news of the bus attack broke in BBC Report.

Police said six gunmen on motorcycles had stopped the bus and fired indiscriminately at passengers.

Prime Minister Nawaz Sharif has condemned the attack and ordered an investigation.

Pakistani Taliban splinter group Jundullah and Islamic State (IS) both said they had carried out the attack.

Later, the militant group Tehrik Taliban Pakistan (TTP) also said it was behind the shooting.

Analysts says Pakistan's fragmented militant movements have previously competed to claim responsibility for attacks.

Wednesday's attack was the second deadliest in Pakistan this year after 62 Shia Muslims were killed in a suicide bombing in January.