LONDON, England (AP) -- Rolling Stones singer Mick Jagger escaped an assassination plot hatched by the Hells Angels, a new British Broadcasting Corp. documentary claims.

A program to be broadcast Monday on BBC Radio 4 says the rock star was targeted in 1969 following a purported dispute with the motorcycle gang over concert security.

The Hells Angels had been hired on recommendation of the Grateful Dead as security (according to some accounts) at the Altamont Speedway in California for a free concert featuring the Jefferson Airplane, Flying Burrito Brothers and the Stones, among other acts, in December 1969.

The Dead ended up canceling their performance after an altercation between a Hells Angel and the Airplane's Marty Balin. Later, during the Stones' performance, a fan, Meredith Hunter, was killed by the Hells Angels.

The event was documented in the film "Gimme Shelter."

Gang members hatched a plan to kill Jagger at his holiday home in Long Island, New York, the BBC claims. Their attack by sea was thwarted when a storm hit their boat, throwing the men overboard, the program says.

The alleged plan was disclosed during an interview with Mark Young, a former FBI officer, for the BBC's "The FBI at 100" documentary, presenter Tom Mangold was quoted as telling Britain's Sunday Telegraph newspaper.