A Wando High School student fatally stabbed another student after he sent his girlfriend a Snapchat message on her iPod, according to Mount Pleasant police.

Matthew Joseph Fischer, 16, a junior at the school, was visiting his girlfriend Sunday night on Baltusrol Lane in Park West when Lucas Bennett Cavanaugh, 17, of Sullivan’s Island sent the girl a message, according to the arrest affidavit. Fischer grabbed the iPod and messaged Cavanaugh, “Come over” and “I’ll kill you, man,” according to the affidavit.

Cavanaugh drove over to the house in a silver VW Jetta. He and Fischer started fighting. Fischer pulled a knife from his right front pocket, fatally stabbed Cavanaugh in the torso and fled the scene, according to police.

Fischer called his mother from his cellphone not far from the house. She brought him back to the scene, and he told police what happened, according to the affidavit.

Both families were in court for a bond hearing Monday morning. Cavanaugh’s father cried as he stood between a detective and victim advocate. Neither family spoke.

Fischer’s attorney, Peter David Brown of Mount Pleasant, spoke on behalf of his client.

“This is just a tragedy for the entire Wando community and the families involved,” Brown said.

According to his obituary, Cavanaugh was a junior at Wando High School and aspired to attend The University of Cincinnati to study automotive engineering and design. One of his main passions was restoring his ’81 Corvette.

When Brown was asked after the hearing if he would argue self-defense, he said he was waiting to learn all the facts of what happened.

A magistrate can’t set bail on a murder charge, so Fischer remained in jail. His bail on a charge of possession of a knife during the commission of a violent crime was set at $100,000.

Another teenager was fatally shot in North Charleston early Sunday.

Travis Brown, 16, was found shot to death at about 1 a.m. Sunday at Fairview Apartments at 8750 Fairwind Drive, according to police. A 15-year-old suspect, who was not identified, was charged with his killing, according to North Charleston Police Department spokesman Spencer Pryor.

In another weekend killing, a man was fatally shot on Johns Island Saturday night, and police were looking for a suspect Monday. The shooting was reported about 10:30 p.m. Saturday near Bozo Lane and Spence Drive. Dwayne Blake, 38, of Johns Island, was killed.

Police issued a murder warrant for Samuri Stanley, 22. He was described as black, about 6 feet 1 inch tall and 150 pounds.

Anyone who sees him is asked to use extreme caution and contact dispatch at 743-7200 and ask for the on-call detective.

Reach Dave Munday at 937-5553.