A 15-year-old in Utah was reportedly killed while speaking with her mother on the phone on May 7, according to Salt Lake City's Deseret News.
Police warn that French should be considered armed and risky.
Sergeant Brandon Shearer of SLCPD told reporters that a search for the girl's boyfriend, homicide suspect Shaun French, ended in Colorado, where authorities arrested him around 11:30 a.m. Wednesday.
Her mother heard part of the attack, police say.
The victim, Baleigh Bagshaw, had returned home from high school on Monday and called her mother to let her know she was OK, as was their usual routine.More news: Opp attacks CM Manohar Lal over foreign visit
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"She was on the phone checking in with her mother after arriving home from school, when she was violently attacked", Salt Lake City Police said on Tuesday. Then, the unthinkable: "While she was on the phone with her mother, she was brutally attacked while inside of her home".
The mother called a neighbor to go check on Bagshaw, Shearer said, and the neighbor called police.
It was unclear whether the attacker was waiting inside the home before Bagshaw's arrival. At that press conference, Shearer said French still being held on three unlawful sexual contact with a minor charges while more charges may be brought. "Our hearts and thoughts are with her".
Shaun French was wanted by Salt Lake City police in connection with the killing of Baleigh Bagshaw, and according to the Otero County Sheriff's Office, he was stopped by a Colorado State Patrol trooper on Highway 50 just northwest of Rocky Ford.
Police confirmed Tuesday that French used to live in the same house as Baleigh and her family. "And that's what makes everything so heartbreaking, honestly", Talia said. "Please keep her family in your prayers", wrote Jeffery P. Lewis in a Facebook post linking people to a GoFundMe page for her funeral costs.