Sri Lanka on Tuesday placed all police stations in Colombo on high alert as police were hunting for an unidentified container truck and a van, believed to be carrying explosives.
A warning issued by the Director of Security at the Colombo Harbour said intelligence had found information that an unidentified container truck and a van carrying a potential explosive device was heading towards Colombo.
Search operations are currently underway at the Colombo Harbour for the potential threat.
The alert came as the island nation observed a day of national mourning for over 320 people killed in a series on blasts on Easter Sunday.