Two security guards were arrested for allegedly attempting to kill a lab assistant of an educational institute in Thane, the police said on Monday. The two accused, Ganesh Verma, 25, and Laxman Togre, 27, had an argument over some issue on the institute's premises on Monday night, Kasarwadavli police station inspector A E Kaldate said.

When the lab assistant, Rajiv Kumar Bhagat, 32, tried to intervene, the accused got angry and allegedly hit him with an earthen flower pot, he said. The victim fell unconscious from the blow, he said, adding that the accused left him there, locked the premises and fled.