Pakistan has captured two militants on suspicion of attempting to organize "terrorist attacks" in Karachi, Press TV reported.
The two members of Tahreek-e-Taliban Pakistan (TTP) were arrested when Pakistani police forces were attacking suspected militant strongholds in the Baldia Town area of Karachi, according to senior police official Omar Shahid.
Shahid told AFP that the two men, identified as Inamullah Mehsud and Sajjadullah Mehsud, are being interrogated and reports indicate that they were planning to bring a bomber to the city from North Waziristan.
"The arrests foiled their attempts to strike terror in Karachi," he added.
Earlier on Friday, a barrage of missiles fired from US drones killed at least 18 people and injured dozens more in the tribal region of North Waziristan.
Since 2008, at least 1,000 Pakistanis have been killed in US drone strikes.
Islamabad has criticized the attacks, saying they are an infringement on Pakistan's sovereignty.
Pakistan has seen an exponential rise in the number of militant attacks in recent years, with over 3,000 Pakistanis killed since July 2007.