The attacker assaulted employees of the Ministry of Internal Affairs in the Noginsky district of the Moscow region and fled on a motorcycle, TASS news agency reported, citing Russian ministry sources.
The injured police officer has been sent to hospital and is in serious condition, it said.
Preliminary investigation shows that the police officers were on duty to detain a drug dealer when being attacked, RIA Novosti news agency reported, citing sources from the Ministry of Internal Affairs.
A criminal case has been opened regarding the attack, according to the Russian Investigative Committee.
AMK/PR
