Nigeria, April 5 -- A Compressed Natural Gas (CNG) powered bus exploded at a transport terminal in Kaduna State, raising concerns over the safety of gas-powered vehicles in Nigeria's public transport system.

The explosion, which occurred on Sunday at about 2 a.m., tore through at least one luxury bus and affected another, scattering debris across the terminal.

Umar Mohammed, a worker at the Mando motor park, said the incident was not a security attack but a gas-related explosion.

"It was a big blast, tearing a luxurious bus apart-in fact, two buses. People are clearing the debris, and for now, we cannot say if there are any injuries or even deaths. Everywhere is calm," he said.

He noted that the timing of the blast-when there was mini...