A paramedic with the Morrisville Ambulance Squad in Pennsylvania died on duty early Monday.
Paramedic Kevin Maffettone, 26, was found unconscious at 7:20 a.m. Monday inside the squad headquarters, according to phillyburbs.com.
He was taken to Aria Health Bucks County Campus in Falls Township where he was pronounced dead.
Officials believe he may have suffered a heart attack.
Maffettone was a recent graduate, just beginning his EMS career. He also volunteered with Levittown-Fairless Hills Rescue Squad.
"We're really not in a position right now to speak about this," Roxy Rookstool, operations supervisor told reporters. "We've never had anything like this ever happen before. It's just unbelievable. He was such a young man."
Maffettone is the second ambulance worker from Bucks County to die from a heart attack in just two years.
EMT Danny McIntosh of Bensalem Rescue Squad suffered a heart attack in 2010 after chasing down a mentally unstable man who fled medical treatment, according to media reports.
More information will be posted on EMSWorld.com when it becomes available.