"Around 7:30pm a vehicle of the Inter-Services Intelligence (ISI) was on its way when two bike riders opened fire at it," SSP Operations Javed Iqbal said.
He added that the vehicle was bullet-proof but two guards sitting on the back of it were injured who were later shifted to the Combined Military Hospital (CMH).
Ex-spymaster faces probe over contentious chronicles
The terrorists armed with an AK-47 escaped unchallenged from the crime scene.
A large number of policemen cordoned off the area and an investigation is still underway.
Earlier today, a Sikh rights activist and leader Sardar Charanjit Singh was gunned down inside his general store in Scheme Chowk area on the outskirt of the city.
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