Overview
- Rony Yahir Alvarenga Rivera, 22, was arraigned Saturday and pleaded not guilty to one count of first-degree murder and two counts of second-degree murder.
- Police say he fatally stabbed his 32-year-old roommate in a Valley Stream house late Thursday, then killed a 42-year-old co-worker outside a Wendy's in Island Park early Friday before surrendering at a Lynbrook 7-Eleven.
- Detectives reported multiple stab wounds to the neck and torso in both attacks, and they say the suspect knew both women.
- The Wendy's victim was identified by relatives as Ana Maria Del Aguila Cordova of Long Beach, a mother of two, while officials have not yet released the victims' names.
- Investigators are reviewing surveillance video and processing both scenes, and they continue to seek a motive as they reassure residents about safety.