Manheim Township Police are describing the circumstances as odd and say they don't know whether the robbers know the men.
In the first incident, police say intruders entered the apartment around 11 p.m., bound the victim's wrists and legs and covered his mouth with tape, then took money from his wallet.
Authorities say the two robbers then went to the convenience store, where one displayed an apparent weapon and took cash.
Police are trying to determine if the same perpetrators have robbed other convenience stores in the area.
The mask-wearing suspects are described as black men in their 20s.
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Information from: Intelligencer Journal/Lancaster New Era , http://lancasteronline.com