Pakistan, July 15 -- Pakistani authorities said on Tuesday they had arrested the alleged mastermind behind last month's deadly attack on a paramilitary Rangers facility in Karachi, alleging the assault was planned from Afghanistan and directed by leaders of the Tehreek-e-Taliban Pakistan (TTP).

The announcement came weeks after militants attacked the Rangers camp in Karachi's Gulistan-e-Jauhar neighborhood, killing three security personnel and injuring four before security forces killed three attackers and captured a fourth in an injured condition.

"The entire planning of this terrorist attack was carried out on the territory of Afghanistan," Karachi Senior Superintendent of Police Irfan Bahadur told a news conference.

"Qari Basheer, w...