Five men, including one from Tewksbury, have been arrested and charged with selling drugs at the VA Hospital in Bedford.

According to the U.S. Attorney's Office, the men allegedly sold heroin, oxycodone, buprenorphine and clonazepam.

David DeJesus, 51; Scott Houtchens, 49; Steven Jakaitis, 49, all of Lowell; David Porterfield, 44, of Saugus; and David Robson, 52, of Tewksbury, were each charged in Federal Court on Thursday with distributing controlled substances including heroin, oxycodone, buprenorphine (used to treat opioid addiction) and clonazepam (used to treat seizure and panic disorders) and conspiracy to distribute controlled substances.

According to the complaint, the defendants allegedly each sold the drugs on the VA Medical Center’s Bedford campus. The VA Medical Center in Bedford provides multiple services to veterans of the U.S. Armed Forces, including alcohol and drug abuse/addiction rehabilitation services.

In some cases, the complaints allege that the defendants were selling their own drugs that had been prescribed and provided to them by medical professionals at the VA.

If convicted, DeJesus, Jakaitis and Robson each face up to 20 years in prison and a $1 million fine.

The cases are being prosecuted by Assistant U.S. Attorney Amanda P. M. Strachan of Ortiz’s Health Care Fraud Unit.