Investigators arrested two 15-year-olds in the beating death of a homeless man, bringing the number of teenagers facing charges to five.

The two teens made their first court appearances Saturday and a judge refused to release them. One is charged with second-degree murder and the other faces an aggravated battery charge.

Authorities said the two teenagers, along with a 14-year-old and 18-year-olds Justin Stearns (search) and Jeffery Spurgeon, were involved in the fatal beating May 25.

Stearns, Spurgeon and the 14-year-old were indicted Thursday on charges of first-degree murder and murder conspiracy.

Michael Eugene Roberts (search), 53, was kicked and crushed when teens jumped on a log on his chest in woods where the group was known to hang out behind a car wash. His body remained in the woods until Spurgeon's mother called authorities three days later to report she had overheard something about a beating.

No more arrests were expected, but the investigation is continuing, sheriff's spokesman Gary Davidson (search) said.