SPRINGFIELD, Mass. (AP) — Springfield police say a man arrested after allegedly stabbing a taxi driver and stealing his cab is also a suspect in the death of his own mother just hours earlier.

Police say 41-year-old Luis Rosa was arrested Monday morning after flipping the taxi cab he had allegedly stolen after stabbing the 25-year-old driver. The driver required treatment for a cut on his shoulder.

Police determined Rosa was a suspect in the death of 57-year-old Norma Perez, who was found dead in her apartment by relatives just before 5 p.m. Sunday. Relatives forced their way into the home after being unable to contact Perez.

Police say Perez was Rosa’s mother.