Thoubal: A powerful hand grenade exploded at the office complex of James Khaling and Sons Construction (JKS Construction) located at Khangsim Village under Kakching Police Station in Kakching District on Thursday.
However, no casualty was reported, police sources said.
The impact of the explosion, which occurred at around 8.45 am, caused partial damage to two cars parked at the office complex of JKS Construction.
On hearing the news of the blast, a team of Kakching Police rushed to the blast site and investigated the incident.
An extensive search was also conducted to find out other possible bombs, the police source said.
So far no individual or group had claimed responsibility for the blast.
JKS Construction company had taken up the construction work of an elevated road underway at Kakching Lamkhai then and other construction works.