A Los Angeles man has been charged with attempted murder and assault in the unprovoked stabbing of a Russian tourist on the Hollywood Walk of Fame.

Donald Offerman was charged Friday in the attack across from the famed TCL Chinese Theatre. The 54-year-old hasn't been assigned an attorney.

Prosecutors say the 20-something tourist was walking with his family Wednesday when Offerman came up from behind and slashed the man with a large kitchen knife.

Prosecutors say Offerman rushed toward the victim's family and swung the knife at them several times. A struggle ensued between Offerman and the tourist.

Two off-duty New York City police detectives stopped the attack and have been credited with saving the life of the tourist, who survived after undergoing surgery.

Prosecutors describe Offerman as a transient.