CLEVELAND (AP) — A man wanted in the killings of an elderly Ohio couple and in armed robberies in three states has been arrested in Arizona.

An FBI spokeswoman in Cleveland says 29-year-old Robert Clark was arrested Thursday by the Mohave County sheriff’s office in Kingman after a high-speed chase. Arrested with him was Tabatha Hazel, who is a suspect in the armed robberies but not in the killings.

A third companion fled and is still being sought by authorities.

Clark sparked a massive manhunt Tuesday in St. Joseph after someone called 911 and reported seeing him firing a rifle out of the window of a green van with Ohio plates.  Another individual then reported seeing someone matching that description near Central High School which sparked a lockdown at Central and numerous other schools in town.

It was later determined by the St. Joseph Police Department that there was no way to determine that Clark had ever been in or even near the city.

Clark has been charged with murder in the deaths of 88-year-old Doyle Chumney and his 79-year-old wife, Lillian. Their remains were found inside their torched car on a country road Jan. 22, the day after they were reported missing from their home.