Three local buses and an ambulance have been targeted in air gun attacks since Sunday, adding to at least nine similar incidents this month.
Since January, at least 64 buses have been shot with air guns in Moscow.
Pellets from the guns, which do not require a license to own, often break the buses' windows in the attacks, but few people have been injured.
Early Monday, a bus carrying the junior team of the Lokomotiv football club was sprayed with pellets, Interfax reported. A pellet broke a window, and a footballer barely escaped being shot on the head.
In another incident that day, two intermunicipal buses were attacked on Shyolkovskoye Shosse in eastern Moscow, Interfax reported Tuesday, without specifying whether anyone was injured.
On Sunday afternoon, an ambulance carrying a patient was shot at the intersection of Ulitsa Svobody and the Moscow Ring Road in the city's northwest, Interfax reported. No one was injured.
