The Oakland County sheriff's department says a 17-year-old boy has been charged with murder after deputies caught him and his 16-year-old girlfriend in a vehicle speeding away from the scene of a fatal shooting.

Undersheriff Mike McCabe says deputies stopped the vehicle Sunday when a woman approached them and said her fiancée was shot and the suspect was in the vehicle.

McCabe says the Saginaw girl tried to hide a .32-caliber semiautomatic handgun by sitting on it. He says deputies also seized three long guns, all stolen from the girl's home.

The handgun is believed to have killed 31-year-old Brian M. Jones of Pontiac.

McCabe said Tuesday that Francisco M. Cavazos has been arraigned on first-degree murder and stolen property charges. It's unknown if he has a lawyer.