WASHINGTON (AP) -- President Barack Obama calls it "offensive" and "wrong" to claim his White House deliberately leaked classified information for political gain.

The president says his administration has "zero tolerance" for the leaking of sensitive information. He says he has sought investigations in the past and will continue to order them.

Lawmakers are investigating recent leaks of sensitive information about the covert drone and cyber wars against terrorism. Republican Sen. John McCain has accused the Obama White House of leaking the information to bolster the president's standing on national security in an election year.

Lawmakers have raised alarms following media reports on White House policy on the highly classified targeting of al-Qaida militants by drones and raids and the deploying of a cyber weapon.