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SOUTH RIVER, N.J (WPIX) - A second teenager has been arrested in connection with an investigation into a planned "Columbine-style" attack at Bridgewater-Raritan High School.

Somerset County Prosecutor Wayne J. Forrest said the second teen is a friend of the 16-year-old who was arrested on Thursday. The suspect has only been identified as a 17-year-old boy who lives in Bridgewater and is a senior at Immaculate High School in Somerville.

Last night, police searched the 17-year-old's home and reportedly found a wide array of firearms and shot gun shells that matched the shotgun shells that were previously seized from the 16-year-old's home. The weapons were registered in his father's name.

The teen taken into police custody today was a competitive rifle shooter.

The 17-year-old has been charged with third-degree possession of a destructive devices.

The investigation into the incident is ongoing. Authorities are asking anyone with information to contact either the Bridgewater Police Department at 908-722 - 4111 or the Somerset County Crime Stoppers TIPS Line at 1-888-577-TIPS (8477).