PHOENIX — A man suspected of killing three family members of Pinal County Sheriff Mark Lamb's relatives in a car crash has been charged, authorities announced Thursday.

Brian Alexander Torres Perez, now 22, is suspected of murdering the young parents and their 11-month-old daughter on Dec. 16, 2022.

Cooper Lamb, 20, and his fiancée, Caroline Brooke Patten, died in hospital after the crash.

The couple's daughter, Elaine, died at the scene.

“Lainey was a very happy baby. She was quiet, always smiling, loved her mommy and daddy very much and had only just learned to walk.” Elaine's Obituary.

What is the charge against the man who allegedly murdered three members of a family?

Torres-Perez was charged with three counts of manslaughter, a second-degree felony.

According to the Gilbert Police Department, prior to the crash he was driving a Chevrolet Silverado at 70 mph in a 45 mph speed limit zone.

It then allegedly crashed into a Toyota Corolla driven by Mr Lam's fiancee.

“Our hearts are broken” – Mark Lamb He said in a Facebook post The day after the crash.

MCAO said excessive speed, alcohol and other drugs were factors that contributed to the accident.

Gilbert police said Torres-Perez had marijuana and alcohol in his system and a blood alcohol content of 0.03, below the legal limit.

The Gilbert Police Department presented the case to the MCAO in February 2023. Maricopa County Attorney Rachel Mitchell said prosecutors thoroughly reviewed the evidence.

“The defendant's reckless disregard for life killed an entire family,” Mitchell said in a news release. “After a thorough review of the evidence, it is time for Mr. Torres Perez to be held accountable for his actions.”

A grand jury recently issued a warrant for his arrest, and he is currently being held by the Maricopa County Sheriff's Office on $150,000 bail, according to MCAO.