BANGOR – A Brewer teen arrested more than three weeks ago and charged with selling a very powerful dose of the painkiller OxyContin was indicted on several drug counts Tuesday by a federal grand jury.

Adam D. Barnes, 18, is charged with two counts of heroin distribution and one count of distributing oxycodone, with the brand name of OxyContin, near the State Street Elementary School in Brewer, the Brewer Middle School and the Alternative Choices for Teens school, defined as a public alternative high school for teens located in Brewer.

If convicted, he faces the possibility of decades in prison and hundreds of thousands of dollars in fines.

Before his December arrest, Barnes was under investigation for months by the Brewer Police Department and the Maine Drug Enforcement Agency.

Also indicted Tuesday were two of the five Massachusetts suspects in a November 2000 robbery at a Waterville motel.

Dennis J. Mooney, 23, who used the aliases Michael Mann and Kevin Bernier, and Manuel A. Roderick, 22, who also has an alias, each were charged with one count of robbery, one count of use of a firearm during a crime of violence, one count of possessing a firearm not registered to them in the National Firearms Registration and Transfer Record, and one count of possession of a firearm by a felon.

They allegedly took part in a Nov. 27 robbery at the Budget Host Hotel “with other unnamed co-conspirators,” the indictment states. The early-morning robbery did not net much money but left a shaken motel clerk and was followed by a dramatic escape attempt down Interstate 95. Mooney, Roderick and two juveniles surrendered at gunpoint after Maine State Police stopped the car near Portland.

Another suspect, Marquis A. Craig, 20, bolted from the car and ran across the highway to escape capture. About 48 hours later, Craig was arrested in Portland after a dramatic scene in which he climbed to the roof of an apartment building and tried repeatedly to get police to kill him. After about 40 minutes, police used a ladder truck from the Portland Fire Department to get the suspect to the ground where he was arrested after a brief struggle.

There was no indication Thursday as to why Craig was not indicted or when an indictment might be expected for his alleged involvement in the crime. Information also was not forthcoming on the fate of the two juveniles.

In other action, the grand jury handed up an indictment against Robert S. Rodriguez, age and location not given, for conspiracy to possess with the intent to distribute and with the actual distribution of cocaine. The alleged offenses occurred from about June to Sept. 25, 2000, the indictment states.

In addition to the count alleging conspiracy, Rodriguez is charged with two other counts of distributing cocaine or cocaine base and with two additional counts of possession with intent to distribute cocaine.