NEW ORLEANS (Reuters) - Two Louisiana sheriff’s deputies were killed and two others wounded in a pair of related shootings west of New Orleans on Thursday, and police said they have five people in custody in connection with the incident. A gunman shot and wounded a St. John Parish deputy while he was directing traffic at about 5 a.m. CDT in an off-site parking lot for the Valero Energy Corp.’s St. Charles refinery, St. John Parish Sheriff Mike Tregre said. The gunman fled, and officers investigating the incident ended up at a trailer park in LaPlace, about 25 miles west of New Orleans. As they were interviewing two suspects, someone came out of a trailer with an assault weapon and shot dead the two officers, Tregre said.