The incident occurred just a kilometer away from the Kremlin. File photo, BGNES
A bomb exploded at a bus stop in central Moscow on Monday, leaving four people injured, Russian media report.
The device was thrown from a car passing by the stop. Three women and a men were hurt, none of them seriously, RBC reports.
Authorities suggest the bomb that went off was home made.
Located just a km away from the Red Square and the Kremlin, the street where the incident took place remained sealed off for hours on Monday evening.
Security is now stepped up across the Russian capital, with security officials warning of possible terror attacks.