The blast on Tuesday ripped a hole in the Daallo Airlines plane fuselage shortly after it took off from Somalia’s main airport, killing one person and forcing an emergency landing.

The newly released surveillance footage shows the suspected bomber being handed a laptop by two other men, one of whom is wearing a security jacket, the National Intelligence and Security Agency (NISA) said.

“There are investigations going on and about 15 people have been arrested so far in connection with the incident,” a Somali security official who asked not to be named told AFP.