At least two people have been killed and two more injured after an unidentified person opened fire at Lahore's Allama Iqbal International Airport on Wednesday.
Security has been tightened, with entry and exit points to the airport closed for investigation.
Police said the incident took place at the arrival area outside the main airport building, with initial reports suggesting it was a "personal dispute".
One person has been taken into custody with no details of the victims or the gunman released so far.
Ten killed in Australia Bondi Beach shooting, two in custody
Brown University shooting leaves 2 dead, 9 injured as police search for killer
India tightens pollution curbs as Delhi's air quality worsens
'Peace is not far away' says Erdogan after Putin meeting
Belarus frees Nobel winner, protest figures as US lifts more sanctions
