The robbers fled on foot and are described as black men, one with a heavy build and wearing a gray hoodie and khaki pants and the other with a medium build and wearing a dark hoodie and blue jeans.
At about 4:21 p.m. that day, police responded to the 600 block of Holly Drive for a reported robbery of a pizza delivery driver.
The victim said that as he was taking pizza from his car, two men approached him. One produced a handgun and demanded money.
The victim complied, and one of the robbers rifled through his clothing to remove more money, Budnick said.
The suspects fled the area on foot and no detailed description of the two men was provided.
A sixth robbery also was committed Monday, although it was not reported until Tuesday, Budnick said Thursday.
A woman told police she was approached by two men near Getty Mart and the railroad tracks on West Bel Air Avenue at about 7:30 p.m. Monday.
The men produced a gun and took medicine from the woman. She did not report the incident until about 11:50 a.m. the next day because she said she "tried to handle it herself," however, leading police to think the suspects and victim may know each other, Budnick said.
No arrests or further suspect information had been made for the other robberies as of Thursday morning, Budnick said.
Anyone with information is asked to call Aberdeen Police Department, Criminal Investigation Section, 410-272-2121.