Three people were killed and five others sustained injuries in a firefight between two groups over social media post, the 24NewsHD TV channel reported on Friday.
The violent clash took place in Peshawar where an exchange of fire between two parties took place over sharing funny content against each other.
Police said they arrested four people and recovered arms and ammunition from them.
According to lawmen, the bodies and the injured were rushed to a local hospital and an investigation is on.