Three New Haven residents were robbed Monday night and early Tuesday morning. Police said two of the victims were sitting at the intersection of Stone and Blake streets on the edge of West Rock Park at approximately midnight when they were approached by two masked males. The suspects threatened the victims by holding an unidentified object against one of their backs, and then took their cell phones and wallets, which held money and their identification cards. Earlier, at 8:30 p.m, Monday, Arosmo Cruz said he was robbed by two males, one black and one Hispanic, on New Haven’s East Shore. The suspects took $40.