SUNNYVALE --

A 47-year-old man has been arrested in the slaying of a woman whose body was found in a garbage bag in a front yard in Sunnyvale, police said Monday.

Feliciano Valencia-Santiago of Santa Clara was taken into custody Friday night as he was riding a bike, said Capt. Dave Verbrugge of the Sunnyvale Department of Public Safety. He is being held at Santa Clara County Jail in the slaying of 46-year-old Maria Esther Orozco of San Jose.

Orozco died of head trauma, Verbrugge said. Her body was found June 5 in a large garbage bag in the front yard of a home on the 800 block of Ticonderoga Drive.

An investigation determined that Orozco had been killed at a home on the 800 block of Revere Drive in Sunnyvale, Verbrugge said. The home has been unoccupied since being damaged in a fire in December, police said.

A motive for the slaying is unknown, Verbrugge said. The suspect and Orozco were acquaintances, he said.