SAN JOSE -- A man found stabbed to death near a trail at an Almaden Valley park has been identified as Errick Wright, 27, and police said they have made an arrest in the case -- an acquaintance who was at the scene when his body was found.

Vincent Gallegos, 20, was taken into custody after a story he told investigators started to unravel, said San Jose police spokesman Sgt. Jason Dwyer.

"He tried to play it off like he found the victim in that condition, but eventually Vincent's story fell apart because of so many inconsistencies," Dwyer said.

Dwyer added that Gallegos had blood on him that he was not able to explain.

A search of the park turned up some items including a knife, which still needs to be tested to determine whether it was the weapon used in the slaying.

"Some of the things that were found had been buried," Dwyer said. "Someone attempted to conceal them."

Police did not know the relationship between Wright and Gallegos.

"They did know each other but there's still a question mark as to the specific reason (for the stabbing)," Dwyer said.

Wright was found about Wednesday at Guadalupe Oak Grove Park, which sits in an upscale area of single-family homes. He had been stabbed multiple times and was pronounced dead at the scene.

Police said it's very unusual to see a homicide in the affluent neighborhood in South San Jose.

"This neighborhood is not known for a high level of crime," said Dwyer.

Neighbors said the last homicide they could recall in the neighborhood was the slaying of San Jose police Officer Jeffrey Fontana, who was shot to death while on duty on a quiet street about a half-mile away from Wednesday's stabbing. A nearby park is named after Fontana.

The home-invasion robbery of an elderly couple about 3 miles away shocked residents in another area of Almaden Valley in January. Suspects were arrested in that case and have a court date next month.

Contact Eric Kurhi at 408-920-5852. Follow him at Twitter.com/erickurhi.