Family and friends are mourning the loss of three Long Island camp counselors who died in a car accident off the Meadowbrook State Parkway Thursday morning,

According to police, the victims -- most in their 20's -- were on their way to work for the disabled, traveling on the southbound side of the parkway, just south of the Southern State Parkway. Their car veered off the road into the heavily wooded area along the parkway at about 8:45 a.m.

The three killed include Michael Mulhall, 22, and sisters Paige Malone, 19, and Jaime Malone 22.

Jim Malone, the father of the two victims, told PIX 11 News he's devastated over his sudden loss.

"We're sad. They were three great kids from this town," said. "They were just wonderful kids...they had a graduation party last Saturday...and now we're here."

The two survivors of the crash, Justine Mulhall, 20, and Kelly Murphy, 20, were rushed to Nassau University Medical Center where they were treated for minor injuries, police said.

Hempstead Town Supervisor Kate Murray said the group was on its way to work at Camp Anchor, a town-run summer camp that services nearly 600 campers with special needs that range from autism to down syndrome.

"It's a tragic loss for the town of Hempstead, for the family and friends and the Anchored Campers at this facility," said Hempstead spokespeson Mike Deenie.

In addition, Nassau County Executive Edward Mangano issued a statement reading, "The county mourns the loss of these three young adults who helped serve our community. My thoughts and prayers go to the families and friends of the victims."

No other vehicles were involved in the accident.

The southbound side of the Meadowbrook State Parkway between Southern State Parkway and Exit M14 were closed to traffic for several hours following the crash.

Authorities are still investigating what caused the accident.