Pakistan Peoples Party (PPP) leader and former MPA from south Punjab Shaukat Basra was injured while his personal assistant was killed in an exchange of fire in Punjab's Bahawalnagar district on Monday.
The exchange of fire took place between supporters of the PPP and Pakistan Muslim League-Zia (PML-Z) in Bahawalnagar's Haroonabad area which led to three people being injured, including Basra.
Basra's personal assistant Imtiaz was killed in the firing.
The injured were all shifted to a local hospital in Bahawalnagar.
PPP Chairman Bilawal Bhutto Zardari condemned the "attack" on Basra as "open terrorism".
"PPP leaders cannot be frightened by such cowardly attacks," he said in a statement posted by PPP Media Cell.
Bilawal demanded that the "terrorists" be immediately arrested and punished.
Basra served as an MPA from Bahawalnagar in the Punjab Assembly from 2008-2013. He is currently serving as the information secretary of PPP's south Punjab chapter.