Afghan policemen keep watch at the site of a suicide attack in Kabul, Afghanistan June 20, 2016.[Photo/Agencies]

Some 14 Nepalese security guards of a foreign embassy were killed and nine people injured after a suicide bomber struck a bus in eastern part of the national capital of Kabul early Monday morning.

The attack was followed by a roadside bombing which injured five people including a provincial council member in western part of the city.

Taliban militant group has claimed responsibility for the Kabul bombings.

About 600 civilians were killed and more than 1,340 others wounded in conflict-related violence and Taliban-led attacks in the first quarter of the year, according to UN mission in the Asian country.