At least 16 people were killed and dozens others injured in an attack on Aden airport in Yemen on Wednesday, shortly after a plane carrying a newly formed Yemeni Cabinet arrived from Saudi Arabia. No one on the government plane was hurt.

Mohammed al-Roubid, deputy head of Aden’s health office, told The Associated Press that along with the 16 killed, at least 60 people were wounded in the explosion. The source of the blast remains unknown and no group immediately claimed an attack on the airport in the southern city.

Loud blasts and gunfire were heard at the airport shortly after the plane arrived, witnesses said.

The cabinet members including Prime Minister Maeen Abdulmalik, as well as Saudi Ambassador to Yemen Mohammed Said al-Jaber, were transferred safely to the city's presidential palace, the witnesses and Saudi media said.

Read more: NBC News