Local police official Bashir Ahmed says the 22-year-old Sadaqat Ali died at a government hospital in the city of Multan in central Punjab province today.
Ali was brought to the hospital last week after 32-year-old Monil Mai threw acid on him when he was visiting her home in the city's Mukhdoom Rashid neighborhood. She had been having an affair with Ali for several years.
Mai was arrested by police hours after the attack and authorities have now registered a murder case against her.