Seven people including a little boy were killed and 28 were wounded when two bombs exploded in a teeming neighborhood of the southern city of Karachi, the most heavily populated in Pakistan, the local television channel Dawn reported Saturday.

The explosive devices of around 4 kilos (9 lbs.) each were both detonated Friday night, with a pause between blasts of a scant 30 seconds, in the popular area of Ancholi, where they also caused widespread material damage to stores, cars and the public highway.

Police officials said the attacks could have been acts of sectarian violence, since most of the area's inhabitants are Shi'ites.

The capital of Sindh province, Karachi has a population of more than 20 million and is the base for many armed groups, which not only makes it the biggest city in the country but also the one with the highest rate of violence. EFE