(CNN) -- A powerful explosion racked Pakistan's troubled Balochistan province on Friday, killing six people and injuring 30 others, police said.
Militants planted a bomb in a rickshaw parked in crowded marketplace in Dera Allah Yar, assistant police superintendent Zahoor Fareedi said. Around a dozen shops were damaged in the blast.
There was no immediate claim of responsibility for the attack.
Balochistan, Pakistan's largest province, is routinely racked with violence.
In addition to sectarian attacks on Shiites, unrest in the province in the country's southwest is believed to be fomented by several insurgent groups, including the separatist Balochistan Liberation Army and the Pakistani Taliban.