Kabul: At least 20 persons were killed and several injured on Monday in a suicide car bomb explosion near a police checkpoint in Lashkar Gah city of Afghanistan's Helmand Province, officials said.

"The bombing that occurred at around mid-day is part of Taliban' s coordinated attack. They are trying to capture the control of the city but our security forces are fighting to push them back," Xinhua news agency quoted an official as saying.