Police are investigating a reported shooting at a New Mexico middle school, saying they have a suspect in custody but no details on whether anyone was injured in the Tuesday morning incident.Berrendo Middle School in Roswell, New Mexico is on lockdown, according to a post around 8 a.m. MT on the Roswell Police Department Facebook page.No details were available on the incident, the suspect, or any potential injuries.A dispatcher with the Roswell police said the initial report came from the Chaves County Sheriff's Office, but officials there could not be reached early Tuesday.