A Brooklyn youth, turned away from a sellout rock concert at Forest Hills Tennis Stadium, was under arrest yesterday on a charge of fatally stabbing a guard who attempted to block his entrance.

The suspect Kerry Flaherty, 21, of 1066 Cypress Ave., was in critical condition at St. John’s Hospital in Elmhurst as a result of a furious battle that followed the stabbing. He was charged with murder and assault in the death of the guard, George Etheridge, 22, of 524 East Sixth St., Manhattan.

Flaherty filed counter charges of assault against two of the guards who were involved in the melee.

Flew Into Fury

According to police of the Forest Hills station, the trouble started at 9:20 p.m. Thursday outside the rear entrance of the stadium packed, despite the rains with 13,000 fans eager to hear a British rock group, The Who.

Detectives said Flaherty became enraged when he was told there were no more tickets available, pulled a knife and club and started screaming, “I’ll kill them.”

According to police, several guards rushed outside to calm Flaherty down and first to reach the screaming youth was Etheridge. Police said Flaherty came at the guard with a 12-inch club and a knife which he plunged into Etheridge’s chest.

As Etheridge slumped to the ground, police said, Flaherty started to run and another guard, Kim Yarborough, 24, ran after him and tackled him. As they struggled, Yarborough was stabbed in the back.

Crowd Pelts Guards

As other guards joined the battle to subdue Flaherty, police said, persons in the crowd hurled bottles and other objects at the guards and police who rushed to their aid. Flaherty was finally subdued and disarmed, the cops related.

Etheridge was rushed, along with his assailant, to St. John’s Hospital where he died in the emergency room. Flaherty was admitted to the hospital with a brain concussion and lacerations of the head.

Yarborough was treated for cuts and lacerations at the same hospital and released.

Flaherty was questioned by detectives who later charged him with homicide. Police said he denied stabbing anyone. Flaherty filed a complaint of assault against two guards in the melee. The two guards charged with assault on Flaherty’s complaint were–Yarborough and Richard Rosolek, 23, both of 209 E. Seventh St., in Manhattan.

The two guards were arraigned before Judge Anthony Savarese in Queens Criminal Court. Bail was set at $500 each for a hearing Aug. 4.