Diphu (Assam): Nine labourers were kidnapped from a construction site by suspected Karbi Peoples' Liberation Tigers (KPLT) militants in Assam's Karbi Anglong district, police said here on Friday.

A group of about four heavily armed militants stormed an under construction hospital building at Rongbong Ghat underm Santipur police station on Thursday night where there were about 27 labourers.

The sources said they militants assaulted the labourers and took away nine of them. District Superintendent of Police B B Chetry has rushed to the spot and a search operation has been launched to trace the labourers.

Security throughout the district has been tightened following the kidnapping.