KARACHI, Pakistan

At least five people were killed in an explosion at a wedding ceremony in northwestern Pakistan on Friday evening, police and local media reported.

The explosion targeted the house of Noor Alam Mehsud, a pro-government "peace militia" leader in the Dera Ismail Khan district of northwestern Khyber Pakhtunkhwa province, when a wedding ceremony was underway there, local broadcaster Geo News reported.

Several people were also injured in the explosion.

Police said they were ascertaining the nature of the blast; however, initial investigation suggests it was a suicide bombing.