A third bomb has exploded near a police station in the Pakistani city of Lahore, after earlier attacks on the military killed at least 45 people.

Taliban militants have renewed pressure on the US-backed Pakistani government, with five bomb attacks this week alone.

Police said up to four people were wounded in the third explosion in the city.

More than 100 people were injured in the initial blasts.

Police official Mohammad Shafiq said: 'There were two suicide bombers who attacked two military vehicles within the space of 15 seconds.'

A military statement said eight army personnel were among the dead.

Lahore has been increasingly subject to Taliban and al-Qaeda-linked attacks in a nationwide bombing campaign that has killed more than 3,000 people in three years.