KABUL: The death toll from a Taliban attack on a government security agency's building in the Afghan capital on Tuesday has risen to at least 28, the Kabul police chief said, with more than 320 wounded.

Police chief Abdul Rahman Rahimi said civilians and members of the Afghan security forces were among the dead and wounded.

The Taliban claimed responsibility for the attack. It was the first in the Afghan capital since the Islamist militant group declared the start of their spring offensive a week ago.

UPDATED

Seven killed, more than 320 wounded in Afghanistan attack

KABUL: At least seven people were killed and more than 320 wounded in a Taliban suicide bomb attack on a government security building in the centre of Kabul on Tuesday, the health ministry said, the worst attack in the Afghan capital in almost a year.

"At least seven people have been killed and 327, most of whom are civilians, were wounded in the attack," said Ismail Kawosi, a spokesman for the ministry. Many of the wounded were in critical condition he said.

The blast during the morning traffic hour was easily the biggest in Kabul since a truck bombing wounded 240 people last August, and was the first in the capital since the Taliban declared the start of their spring offensive last week.