Northampton County coroner Zachary Lysek says the riders were part of a group of seven traveling on Route 512 in East Bangor, about 60 miles north of Philadelphia, shortly before 5 p.m. Friday. Several of the cycles collided with the truck, which was going the opposite way.
Lysek says four other men were taken to hospitals, but he did not know their conditions. The Morning Call of Allentown reports that the cyclists were part of the New Jersey-based Last Chance motorcycle club.
The names of the victims have not been released.
Information from: The Morning Call