An explosion on Tuesday, June 18 morning, rocked an area in the west of the Afghan capital, Kabul, close to the country's national parliament, police said, according to Reuters.

The explosion occurred soon after 9 am (12.30 am EDT) in an area called Karta-e Seh, a Kabul police source said, and came as hundreds of local and international officials gathered on Kabul's outskirts ahead of a ceremony to mark the beginning of the final phase of security transition to Afghan forces across the nation.