Story highlights Deaths appear to be a murder-suicide, Glendale police say 
 
 "The school and neighborhood are safe," police say on Twitter 
 
 (CNN) The deaths of two 15-year-old girls Friday on the campus of an Arizona high school are believed to be the result of a murder-suicide, police said. Glendale police spokesperson Tracey Breeden said officers responded to calls of a shooting at Independence High School near 75th and Glendale avenues just before 8 a.m., right around the time school was scheduled to begin for the day. The 10th graders at Independence High School in Glendale had single gunshot wounds and a weapon was found near their bodies, police said. Breeden said a suicide note was also located at the scene, leading detectives to believe one of the teens shot the other before turning the gun on herself. RELATED: Sister speaks out about teen killed in shooting 
 
 According to Breeden, the investigation has revealed the two girls were very close friends and appeared to also be in a relationship. "Although the investigation is not complete, investigators working the case say evidence found at the scene leads them to believe that one female took the life of the other female before taking her own life," police said later Friday. "Our thoughts and prayers are with them, with everyone on scene and with the community during this difficult time," his statement read.
– Two 15-year-old girls are dead in Arizona after a shooting at Independence High School in Glendale Friday morning. Details are vague—the sophomores were shot at what CNN describes as "a covered patio area near the main building" and cafeteria prior to 8am, and authorities don't believe there are any suspects at large. ABC 15 reports that there are no persons of interest and that the shooting is considered an isolated incident. "This is not an active shooter situation, and we realized that once we got on scene," a police officer tells the Arizona Republic. But authorities won't say whether the situation could be a double suicide or a murder-suicide. It's not clear what, if any, relationship existed between the two 10th-graders, who were found close to one another with a single gunshot wound each; a gun was found nearby.