Two Assam Police constables were seriously injured at Jorhat bypass in Jorhat in upper Assam when unidentified youths lobbed a grenade at a police patrol on Tuesday.
The security men signalled two youths with gunny bags on a bicycle to stop, but the youths lobbed a hand grenade at the patrol vehicle before fleeing early on Tuesday, Jorhat SP Sunjukta Parasor said.

Constables Keshab Gogoi and Bolin Sonowal were admitted to the Jorhat Medical College Hospital with serious injuries, the SP said.

The police seized the bicycle along with 60 rounds of AK-47 ammunition, 28 rounds of magazines, a bottle grenade and a hand grenade, she said.