People stand at the site of a bomb blast in New Delhi September 27, 2008. REUTERS/Vijay Mathur

New Delhi (Reuters): A bomb ripped through a crowded market in New Delhi on Saturday, killing one person and wounding 15 others, police said.

'We heard one boy was killed,' said Rajan Bhagat, a spokesman of Delhi Police, who later confirmed the blast was caused by a bomb.

'We are examining witnesses who saw two men throw a piece of plastic bag from a motorcycle. That caused the blast.'

TV stations said the blast was of a low intensity and occurred in a flower market in a south Delhi neighbourhood.

'I saw a boy pick up a tiffin box from the road, and suddenly there was a big explosion,' a witness told private news channel. 'His head was ripped off.'

TV images showed a crater on the road. Police cordoned off the blast site. Many people, including wailing women, tried to break through the cordon.

People were seen walking in blood-stained shirts. Locals carried the injured to hospital.

Police said they were evacuating people from all major markets in the city.