Protesters in Mandi Bahauddin booked under Section 16 MPO and Section 341 PPC after burning tires, blocking traffic.
Police say the dual murder appears to be an honour killing case.
The victim's father says the suspect had verbally divorced his daughter a few days ago and now wanted to kill her.
Victim is 19-years-old and was brought to the hospital in serious condition.
Judge releases individuals named as chief suspects due to lack of proof and absence of witnesses.
DSP Tahir Majeed Khan claims a case has been registered and two suspects have been arrested.
Victim says he had deposited Rs500,000, half of which was mysteriously withdrawn from his account within hours.
Rescue official says the death toll could rise further as dozens are still in critical condition.
Basra's personal assistant Imtiaz was killed in the exchange of fire between PPP and PML-Zia supporters.