(CNN) A Coast Guard officer who allegedly stockpiled weapons and wrote a hit list of prominent Democrats and journalists was indicted Wednesday on gun and drug possession charges, the Department of Justice announced in a news release.

Christopher Hasson, 49, of Silver Spring, Maryland , was charged with the unlawful possession of two improperly registered silencers, the possession of the narcotic tramadol and the possession of 17 firearms as an unlawful user and addict of a controlled substance.

"We continue to gather evidence, as well as review evidence already obtained as part of this ongoing investigation," US Attorney Robert K. Hur said in the statement.

If Hasson is convicted, he faces maximum prison sentences of 10 years for each of the three charges related to firearms and silencers and of one year for possession of tramadol, according to the release.

CNN left messages for Hasson's attorney seeking comment on the charges Wednesday evening.

Read More