The convoy of former Pakistan Prime Minister Yousaf Raza Gillani's son Syed Ali Musa Gillani was allegedly attacked by Pakistan Tehreek-e-Insaf (PTI) party workers in Mehmoodabad area here on Friday.
Reportedly, the incident took place when Gillani's convoy was passing through the residence of Union Council Chairman Ejaz Dogar, who is a PTI politician, Geo TV reported.
Dogar and his party workers came out from the house and allegedly fired indiscriminately on the convoy. However, no one was injured in the incident.
At least, 20 people have been booked for their alleged involvement in the case, including Dogar.
Gillani is slated to contest from NA-157 seat in Multan in the upcoming general elections.
Meanwhile, Pakistan People's Party (PPP) chairperson Bilawal Bhutto condemned the incident and demanded an investigation against those involved in the attack.
"Bullets, hurdles, and restrictions cannot stop PPP from continuing on its path," Bilawal was quoted by Geo TV as saying.
Pakistan has been suffering a spate of terror attacks in the run-up to the general elections slated to be held on July 25.
On July 16, Awami National Party (ANP) leader Daud Khan Achakzai was injured when unknown assailants opened fire indiscriminately on a guest house where party candidate Zmrak Khan Achakzai was staying.
Daud, the ANP's central vice president, was paying a visit to Zmrak when the incident occurred in Chaman town, situated in Balochistan's Qilla Abdullah district, Geo TV reported.
The gunmen fled from the area immediately after firing on the guest house. Daud was shifted to Quetta for further medical treatment.
On July 15, Pakistan observed a day of national mourning in light of the recent terrorist attacks on political candidates and their supporters.
On July 13, at least 149 people, including Balochistan Awami Party (BAP) leader Siraj Raisani, were killed and over 200 injured when a suicide bomber blew himself up during an election rally in Mastung, making it one of the single largest terror attacks in the history of Pakistan.
According to media reports, the Islamic State (IS) has claimed responsibility for the Mastung attack.
The same day, at least four people were killed and a dozen others were injured in another blast in Bannu in Pakistan's Khyber Pakhtunkhwa province.
The bomb exploded near the rally of Jamiat-e-Ulema Islam (F)'s Akram Khan Durrani, who is contesting election against Pakistan Tehreek-i-Insaf (PTI) chairman Imran Khan. Durrani escaped the attack unhurt, Regional Police Officer (RPO), Bannu, Karim Khan said in a report.
Earlier on July 9, Awami National Party (ANP) candidate from Peshawar Haroon Bilour and 19 others were killed in a suicide blast in Peshawar. The Tehreek-i-Taliban Pakistan (TTP) had claimed responsibility for the attack.