A St. Tammany Parish grand jury Wednesday indicted three defendants in two cases that happened in November — the stabbing death of a man near Slidell and the death of a pedestrian who was struck by a motorist on Lindberg Drive in Slidell.

The grand jury charged Clayton Maricle, 17, with second-degree murder in the death of 20-year-old Nicholas Carmen, who was stabbed 15 times as he and a group of friends walked along an abandoned railroad track near Slidell.

The St. Tammany Parish Sheriff’s Office said at the time that Maricle was on a weekend furlough from a group home in Branch, where he was serving time for vehicular burglary.

He was walking with a group that included the victim when a quarrel broke out, the Sheriff’s Office said.

Marty Anderson, 41, of Slidell was charged by the grand jury with obstruction of justice in the same incident.

The Sheriff’s Office said Anderson helped Maricle dispose of evidence and called his aunt to ask her to pick the teenager up and drive him to his family’s camp in Nicholson, Mississippi.

Maricle was arrested there after his aunt called authorities to say she believed her nephew had stabbed someone.

The grand jury also returned a true bill in the case of Michael White, 41, who was charged with vehicular homicide.

White was initially arrested on counts of driving while intoxicated, having no insurance and first-degree negligent homicide after he struck 37-year-old Albert Davis, of Alabama, on Nov. 22, Slidell Police spokesman Daniel Seuzeneau said at the time. Davis died of his injuries.

Follow Sara Pagones on Twitter, @spagonesadvocat.