The southern Pakistani port city of Karachi was declared Wednesday on high alert after a series of bomb blasts in India's financial city of Mumbai, the private GEO Television reported.

Police on patrolling throughout the city are ordered to remain alert and keep an eye on every suspicious activity, said Deputy Inspector General for Operations in Karachi Mushtaq Shah, according to GEO.

An extra force of 400 personnel has been deployed to sensitive consulates and buildings, GEO quoting the officer reported.

Starting on Tuesday evening, seven or eight bombs exploded in quick succession at or near railway stations on the Western Railway network of Mumbai, killing over 150 and injuring more than 400 others.

Terming the Mumbai blasts "despicable act of terrorism" in a statement released later on Tuesday, Pakistani foreign office spokesman strongly condemned the deadly blasts on commuter rail network.

Pakistani Foreign Minister Khurshid Kasuri who was on a visit to Washington on Tuesday slammed ghastly train bombings in Mumbai, and termed them as terrorist attacks affecting the whole world.

Source: Xinhua