Four people including the Station House Officer (SHO) Hameed Khoso were killed in an exchange of firing between two rival tribes in Nawabshah, reported 24NewsHD TV channel.
The incident took place in the vicinity of Mirzapur police station due to a dispute on agricultural land between Zardari community and Bhand community.
Separately, a wanted robber was killed along with partner in another police encounter.
As per the statement of Senior Superintendent of Police (SSP) Sumair Noor Channa, the police received a tipoff that the wanted robber Bakhto Jakhrani is present along with the gang at Mauladad.
Seeing the police, the robbers opened fire. In response, the police officials shot dead the key robber along with his fellow.
The robber Bakhto Jakhrani was wanted in kidnapping for ransom, murder and other serious cases.
Meanwhile, the encounter between the police and robbers was continuing, as a result of which more police officials were called on.
Reporters Hyder Khanzada, Muhammad Ali Mirani