A shooting in Somerville and stabbing in Medford 30 minutes later on Dec. 1 were related, according to police, and two suspects in the incidents have been ordered held without bail.
Joshua Sullivan, 18, of Somerville and Khyam Mayes, 29, homeless, were arrested the morning of Dec. 7 on charges of armed assault with intent to murder and assault and battery with a dangerous weapon, Somerville Deputy police Chief Paul Upton said in an e-mail.
The arrests came six days after a 24-year-old man was shot on Evergreen Avenue in Somerville and the stabbing occurred in Medford about 30 minutes later. The two incidents were connected in a joint investigation by Somerville and Medford police and the FBI, Upton said.
Arrest warrants were obtained for Sullivan and Mayes on Dec. 5; they were both arrested Dec. 7 and arraigned in Somerville District Court later that day, where Judge Maurice Flynn ordered them held pending without bail pending a hearing Thursday.
Further details on the incidents were not provided. All court files related to the case remained impounded Monday.
Both suspects are expected to appear for a dangerousness hearing Thursday morning in Somerville District Court.