The Arizona Republic-12News Breaking News Team Sat Mar 8, 2014 10:44 PM

There are more questions than answers 24 hours after the bodies of two Sandra Day O’Connor High School students were found dead in north Phoenix.

Police believe Matthew Bolton, 15, shot Anastasia Greer, 16, around noon Friday outside residence near 40th Drive and Happy Valley Road. Bolton then shot himself. Greer was said to have recently ended a romantic relationship with Bolton.

Sgt. Tommy Thompson, spokesman for the Phoenix Police Department, could not say Saturday where Bolton obtained a the gun used to kill Greer and himself, or who dropped Bolton off at the house where the apparent murder suicide took place.

Heidi Vega, manager of communications and community engagement at Deer Valley Unified School District, did not immediately respond to an interview request.

The neighborhood where the teenagers’ bodies were found was quiet Saturday morning, giving no indication of the previous day’s violence. So was the campus at Sandra Day O’Connor High School, where there were few cars parked outside and the buildings were locked.

School officials postponed the The Glow Carnival and Charity event and the Air Force Junior Reserve Officers Training Corps Military Ball.