KARACHI: A powerful bomb exploded near a mosque in Pakistan's largest city Karachi on Friday, killing at least four people and wounding 30 others, officials said.
The blast came outside a local mosque in the city's Delhi colony as worshippers were leaving after offering weekly Friday prayers.
"Apparently a convoy of vehicles passing the mosque was targeted in the attack," Abdul Khaliq Sheikh, a senior police official, told AFP.
"The convoy had three vehicles including one government car. It is not yet clear who was the target."
Sagheer Ahmed, the health minister for Sindh province, told reporters that the blast killed four people and wounded 30 others, five seriously.
Sheikh said that a motorcycle was used in the attack, but it was also not immediately clear whether it was a suicide attack or a planted bomb.
On Thursday, a senior policeman who had survived several assassination attempts was killed with three other people in a suicide attack in Karachi claimed by a Taliban faction.
The Pakistani government is in talks with the umbrella Tehreek-e-Taliban Pakistan (TTP) group to end their bloody seven-year insurgency.
But the Mohmand chapter which claimed Thursday's attack has rejected the peace process.
Karachi, a city of 18 million people which contributes 42 percent of Pakistan's GDP, has been plagued for years by sectarian, ethnic and political violence. (AFP)