The attacker – Trailokya Sarma – has since been arrested and the police have registered a case against him.
The stabbing incident happened in front of Chandmari police station.
The injured youth has been identified as Dipjyoti Lahkar. He is a resident of Forest Gate area of Narengi in Guwahati.
Lahkar has been admitted to the hospital. Trailokya Sarma is a resident of Bamunimaidan area in the city.