At least six people were killed and almost 20 others wounded in a bombing attack near an army vehicle in the eastern Pakistani city of Lahore, police said.
An assailant detonated his explosives near the military vehicle, used by a census team, early Wednesday morning, police officials said.
"It appears to have been an act of terrorism," said Punjab's provincial Law Minister Rana Sanaullah, referring to the attack.
Authorities have launched an investigation into the incident, without providing further information.
No group has so far claimed responsibility for the attack.
Lahore, the capital city of Punjab Province, has been the scene of several attacks since February this year.
In mid-February, a powerful bomb exploded among people participating in a protest rally by Pakistani chemists and pharmaceutical manufacturers near the provincial assembly in the city, killing at least 13 people.
Two bomb explosions also rocked Lahore later in February and claimed the lives of at least six people.
Source: News Agencies, Edited by website team