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A coalition base which houses American Special Operations Forces outside Kabul was the target of a complex attack by insurgent forces Friday, U.S. officials said.

The 10:15 p.m. attack on Camp Integrity near the Kabul airport included a suicide car or truck bomb followed by an assault by armed insurgents.

At least two enemy forces were killed, the The International Security Assistance Force said. There is no confirmation of any U.S. or coalition casualties.

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The attack on the coalition base was one of several bombings and attacks that rocked the Afghan capital Friday.

The first was a 1:30 a.m. truck bomb attack near an Afghan Army compound in Kabul, that killed at least 15 civilians and wounded over 400 people, presidential spokesperson Zafar Hashemi told NBC News.

Afghan security forces and residents stand near the crater from a powerful truck bomb that exploded near an Afghan military compound Friday. WAKIL KOHSAR / AFP via Getty Images

The explosion left a hole more than 33 feet deep, and destroyed buildings and cars, a witness told Reuters.

RELATED: Deadly Truck Bomb Injures 400, Leaves 33-Feet-Deep Crater in Kabul

At around 7:30 p.m. a suicide bomber dressed in a police uniform and backpack detonated an explosive at the gate of a police academy, killing at least 18 cadets and guards and injuring at least 14 others, officials said. News agency Pajhwok Afghan News cited higher numbers.

A Kabul resident told NBC News that both the counternarcotics police headquarters and headquarters for Kabul's District 15 were under attack, pummeled by heavy gunfire and several explosions — possibly RPGs or grenades.

The Taliban took responsibility for the suicide attack on the police academy, and claimed that more than 50 police had been killed or injured. They did not comment on either of the other two attacks.