Karachi , Pakistan ( CNN ) -- For the second time in two days , Pakistan 's largest and busiest airport was forced to shut down after militants launched a brazen attack on airport security forces . Tuesday 's assault targeted the Airport Security Forces academy near Karachi 's Jinnah International Airport , the airport 's manager told CNN 's Saima Mohsin in Karachi . Security forces told CNN that an unknown number of gunmen attacked the academy 's entrance and were met with an armed response . The attackers fled , and no one was killed in the attack , officials said . Once again , the Pakistani Taliban claimed responsibility . `` This wave of attacks will be continuing in retaliation for the shelling and atrocities of the government , '' spokesman Shahidullah Shahid said by phone Tuesday from an undisclosed location . Ten militants stormed the same airport 's cargo area late Sunday night , leading to an hours-long siege that left 36 people dead , including the assailants . The Pakistani Taliban also claimed responsibility for that assault , saying the attack was retaliation for the death of former chief Hakimullah Mehsud , who was killed in a U.S. drone strike in November in North Waziristan . The militant group , also known as the TTP , had warned of more carnage starting Tuesday . Shahid said earlier this week that the Pakistani Taliban would engage `` in a full-out war with the Pakistani state , starting on June 10 . '' But the airport itself was safe Tuesday , Pakistan 's Civil Aviation Authority said . `` # Jinnah Airport is safe , # ASF academy is under attack , '' the aviation authority tweeted Tuesday . The Civil Aviation Authority said flights were temporarily suspended but later resumed Tuesday . By Tuesday afternoon , the situation was `` under control , '' military spokesman Asim Bajwa said . `` 3 to 4 terrorists fired near ASF Camp , ran away , '' Bajwa tweeted . `` No breach of fence , no Entry . Chase is on , situation under control . '' Airstrikes kill 15 militants . Hours before the renewed violence in Karachi , the Pakistani military launched a deadly assault targeting nine militant hideouts Tuesday . At least 15 militants were killed in the airstrikes on Khyber Agency , in tribal areas bordering Afghanistan , the Pakistani military said . A military spokesman said he could not confirm whether the airstrikes were directly related or in response to the violence at Karachi 's airport earlier this week . But it 's those kinds of attacks that the Pakistani Taliban warned would spur more violence from their end . When the TTP claimed responsibility for Sunday 's airport attack , it called on the government to end airstrikes -- or face more attacks like the Karachi airport terror attack . Apparently , the TTP followed through with its promise . History of terror . The Pakistani Taliban , formally known as Tehreek-i-Taliban Pakistan , has long conducted an insurgency against the Pakistani government . `` Their primary target is the Pakistani state and its military , '' said Raza Rumi of the Jinnah Institute , a Pakistani think tank . `` It resents the fact that ( Pakistan ) has an alliance with the West , and it wants Sharia to be imposed in Pakistan . '' The U.S. Justice Department charged Mehsud in 2010 for his alleged involvement in a 2009 bombing at the United States ' Forward Operating Base Chapman in Khost , Afghanistan . The attack killed seven U.S. citizens , including five CIA officers and a member of Jordanian intelligence . Mehsud took over from Baitullah Mehsud , a fellow clan member , in 2009 after the latter was killed in a U.S. drone strike . Four years later , Hakimullah Mehsud suffered the same fate . CNN 's Sophia Saifi reported from Karachi ; Holly Yan reported and wrote from Atlanta . CNN 's Khushbu Shah and journalists Saleem Mehsud and Zahir Shah also contributed to this report .
The situation near Jinnah International Airport is under control , military spokesman says . Pakistani Taliban claim responsibility for both attacks in Karachi this week . Comment: Hours before Tuesday 's attack , Pakistan 's military said it killed 15 militants in airstrikes .