A man was stabbed multiple times at a Cambridge park Sunday night, according to a State Police statement. Troopers found the man in John F. Kennedy Park at the corner of Memorial Drive and John F. Kennedy Street about 8:55 p.m., the statement said. The man, who was not identified, was conscious and alert when he was taken to Beth Israel Deaconess Medical Center, police said. Several State Police cruisers were at the scene Sunday night as police searched the area. State Police detectives with the Middlesex district attorney’s office assisted troopers from the Brighton barracks with the investigation Sunday night. Cambridge Police also responded. No arrests had been made Sunday night, and officials declined to comment further.