The man walked into the lobby through the entrance facing West Franklin Street, walked up to the teller and "just demanded money," he said.
Following the robbery, Detective Shawn Schultz dusted the door's handle for fingerprints as officers, one led by a K-9 dog, combed the wet grassy area in front of the entrance and headed east.
Lt. Michael King, the department's investigative services commander, said the man had a gun, but did not want to disclose what type of weapon was displayed.
He said the man last was seen headed east toward Alexander Street.
Kifer said no one was injured in the incident. The bank teller was able to hit the alarm as the man was walking out, he said.
In the second incident, reported about 9:40 p.m., an armed white man wearing a ski mask, about 5 feet 10 inches tall and weighing about 190 pounds, entered CVS Pharmacy at the intersection of South Potomac Street and East Wilson Boulevard, "went straight to the pharmacy" and stole prescription drugs, King said.
He said the robber's age could not be determined because he was wearing a ski mask. There was no surveillance system in the store, so a photograph was not available of the robber, he said. There were about four people in the store when the incident occurred, he said.
King said he would not release what type of medication the man stole.
A man had been apprehended after he was seen running on South Potomac Street, but after he was shown to witnesses from within the store, it was discovered that he was not the armed robber, King said.
Schultz said that as of 9:30 p.m., police did not have an identity for the Hagerstown Trust robber. He said that police had checked bars and motels for the robber and checked computer systems for an identity, but did not come up with a name by 9:30 p.m.
Anyone with information on the robber may call Schultz at 301-790-3700, ext. 253, or call Detective George Brandt at ext. 242.
Anyone with information on the CVS Pharmacy robbery may call Detective Patricia Moulton at ext. 281.