Police confirmed the explosion at the Mass Rapid Transit (MRT) station construction site in Bandar Malaysia Tuesday evening was from an old unexploded bomb from the Second World War.

Kuala Lumpur police chief Datuk Amar Singh Ishar Singh confirmed the matter when contacted.

"From initial investigations, an old bomb from the Second World War suddenly exploded when construction works were being carried out," he said.

In the incident at about 5pm, three Bangladeshi workers were seriously injured and two of them lost their legs while another suffered injuries on the hands and legs.

The three victims were sent to the Kuala Lumpur Hospital for treatment.

Meanwhile, a Fire and Rescue Department source said the department received a call at 5.23pm and arrived at the location about 10 minutes later.

He said 25 officers and personnel with five fire engines from Hang Tuah, Pudu and Tun Razak stations rushed to the site.

-- BERNAMA