Shillong (PTI): Security along the Assam-Meghalaya boundary has been put on high alert while the Indo-Bangladesh border sealed as an alert was sounded across the north east region following serial blasts in Assam that killed 56 people.

The police top brass in Meghalaya held an emergency meeting this afternoon to review the state's security scenario and discuss measures to prevent untoward incidents in the aftermath of the violence in the neighbouring state.

"We have ordered the security forces to check all vehicles, especially those coming from Assam," IG (SB) S B Singh said after the meeting.

Random check points have been put up along all roads connecting the state with Assam and a manhunt launched to nab the perpetrators of the blasts, a security source said.

The Assam boundary has been virtually sealed as indefinite curfew has been imposed in Guwahati and no vehicle from Meghalaya is allowed to enter the neighbouring state.

Police sources said vigil along the Assam boundary has been enhanced and police posts along the boundary asked to intensify patrolling and frisking to prevent movement of anti-national elements.

BSF DIG Ravi Gandhi said the Indo-Bangladesh border has been sealed and the troops along the boundary put on maximum alert.