County police said 18-year-old Kayla Yow, of Glen Burnie, was found dead Friday evening from apparent upper-body trauma at her home on Glen Mar Drive.
Da'von Markell Mullins, 22, of the 6900 block of Reisterstown Road in Baltimore, was also found at the scene, also suffering from upper-body trauma. Police characterized the incident as an apparent homicide combined with attempted suicide.
Mullins was charged with murder and related charges and as of Saturday was under guard at an area hospital, where he was in critical condition, according to an Anne Arundel County Police Department news release sent out Saturday afternoon.
Police said they received a 911 call from a family member of Mullins at 7 p.m., asking that they check on Mullins in light of several text messages that left the caller worried about his welfare. The caller said Mullins was at his girlfriend's apartment in the 400 block of Glen Mar Road.
Officers canvassed the building, contacted several of Mullins' associates and finally got into Yow's apartment with a key provided by maintenance, after there was no answer to knocks on the door, police said.
The officers found Yow dead in the living room, with Mullins nearby. A handgun was recovered at the scene, police said.
Yow was declared dead at the scene, Mullins was taken to a hospital by emergency medical services and the department's homicide unit was called to investigate. Police said preliminary investigation indicated that Mullins and Yow had been in a relationship.
Yow's remains have been transported to the Office of the Chief Medical Examiner for an autopsy, police said.
Police said this is an active investigation, and anyone with information is asked to contact the homicide unit at 410-222-4731 or the department's Tip Line at 410-222-4700.