Islamists attacked American University in Kabul, Afghanistan today.

Explosions and gunfire reported on campus.

“We are stuck inside and very afraid.” https://t.co/qHuPvvkGyY via @ndtv

Heavy military equipment is en route to the university–

NOW: Some heavy military vehicles approaching @AUAfghanistan where #Kabulblast took place pic.twitter.com/jiIXBrw9BS

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‘Complex Attack’ Reported at American University of Afghanistan in Kabul: There are reports of gunfire and ex… https://t.co/DbjVGyxBYb

NDTV reported:

Explosions and gunfire rocked the American University of Afghanistan in Kabul, an official and students trapped inside classrooms told news agency AFP, as the complex came under a terrorist attack.

“I heard explosions and gunfire is going on close by… out class is filled with smoke and dust,” a desperate student told AFP by telephone.

“We are stuck inside and very afraid.”

Many other trapped students were tweeting desperate messages for help. Among them was Associated Press photojournalist and Pulitzer Prize winner Massoud Hossaini.

No terrorist group has so far claimed responsibility for the attack, which comes as the Taliban step up their summer fighting season against the Western-backed Kabul government.

The attack comes after two professors at the university — an American and Australian — were kidnapped in the heart of Kabul earlier this month, the latest in a series of abductions of foreigners in the conflict-torn country.