St. Petersburg, FL: Investigators in Florida say the suspect is a teenager she met just a month ago, and the victim, a 14-year-old girl, was killed in a murder-suicide at a drug-fueled house party.

According to a news release from the Pinellas County Sheriff’s Office, the shootings took place at a house close to St. Petersburg on Saturday, April 20, at approximately 8:45 p.m., while the suspect was watching a dog. About 20 miles south-west of Tampa is St. Petersburg.

“Once deputies arrived on-scene, they located 14-year-old Sayuri Jade Ruiz deceased, suffering from a gunshot wound to the head. Deputies also located 17-year-old Hector Pfeiffer, with a self-inflicted gunshot wound to the head,” officials said.

“Pfeiffer was transported to the hospital and pronounced deceased at 10:16 p.m.”

According to officials, an enquiry showed that the 26-year-old homeowner had hired Pfeiffer to watch the dog while he was out of town.

According to officials, Pfeiffer invited Ruiz and another woman over “to hang out” at around 4 a.m. on Saturday, which marked the start of the celebration. About a month ago, Pfeiffer met the two “on a social media app.”

An 18-year-old St. Pete Beach guy joined the three, “and they consumed alcohol, marijuana, and cocaine throughout the day,” according to the sheriff’s office.

“Pfeiffer began brandishing a firearm belonging to (the homeowner). Detectives learned they all began playing with the firearm and taking photos with it,” the sheriff’s office said.

“A verbal altercation ensued … and (Pfeiffer) became upset. Detectives say Ruiz was speaking to the other female regarding the argument when Pfeiffer approached Ruiz and pointed the gun at her head and shot her. Detectives say Pfeiffer then shot himself in the head.”

According to officials, an autopsy was planned to ascertain the “manner of death.”

According to investigators, Ruiz was from New Port Richey in Pasco County, which is roughly 30 miles to the north, while Pfeiffer lived in Seminole, which is about 7 miles from the crime scene.

Approximately 600 murder-suicides occur annually, according to the FBI. Each year, they cause roughly 1,000 deaths.

“Although uncommon, such incidents vary widely in terms of the persons involved, how they are related, and where the crimes take place,” the FBI reported. “Usually, law enforcement personnel deal with murder-suicides involving two people in domestic settings or relationships.”

According to statistics, 81% of murder-suicides occur in the house, and about 65% involve intimate partners.