Gas found on slain jogger Vanessa Marcotte's body, police say

WORCESTER, Mass. -- Police say socks and a hair tie found on the body of a Google employee slain while out for a run near her mother's Massachusetts home tested positive for gasoline, and the man charged with killing her bought $5 worth of gas on the day of her death.

The police affidavit in the death of 27-year-old Vanessa Marcotte was filed in a Massachusetts court.

Marcotte lived in New York City but was visiting her mother in Princeton, Massachusetts, in August 2016 when she failed to return from a run and her body was found in the nearby woods.

"Her hands and feet had been burned," the affidavit said, "presumably in an attempt to destroy potential DNA evidence."

A Worcester man, Angelo Colon-Ortiz, faces a murder charge in her death based on DNA evidence.

While announcing Colon-Ortiz's arrest last spring, Worcester County District Attorney Joseph Early said Marcotte put up a fight during her deadly assault, which helped police piece together a profile of her murderer, CBS News correspondent Tony Dokoupil reported.

"DNA from a possible suspect was obtained at her autopsy from an examination of her hands," Early said. "State police found a match for that DNA."

Marcotte was one of three women killed while running over a nine-day period that summer. The other two women died in Michigan and New York.