More explosion, gunfire heard at Nairobi hotel

Security forces help civilians flee the scene as cars burn behind, at a hotel complex in Nairobi, Kenya Tuesday, Jan. 15, 2019. Terrorists attacked an upscale hotel complex in Kenya's capital Tuesday, sending people fleeing in panic as explosions and heavy gunfire reverberated through the neighborhood. (AP Photo/Ben Curtis)

NAIROBI, Kenya (AP) — Another explosion and gunfire have been heard at the hotel complex in Kenya's capital even after authorities announced that all was secure following Tuesday's attack.

The gunfire came not long after scores of survivors who had been holed up in the Nairobi complex overnight were freed.

Kenya's Interior Ministry has said authorities are "mopping up" the scene but have not given details on the fate of the attackers. It is not known if any are still at large.

The al-Shabab extremist group has claimed responsibility.

This frame taken from video shows a scene of an explosion in Kenya's capital, Nairobi, Tuesday Jan. 15, 2019. Gunfire and explosions were reported near an upscale hotel complex. (AP Photo/Josphat Kasire)