Later, at 11:20 p.m., Blodgett said police received a report that Ritzer had not returned to her home in Andover and was not answering her cell phone.
Investigators went to the high school and found blood in a second floor bathroom, the D.A. said.
About an hour later, Topsfield police found Chism walking on Route 1.
He was taken to Danvers police and interviewed. Authorities also looked at video surveillance from inside the school and a short time later Ritzer’s body was found in the woods behind the high school.
WBZ NewsRadio 1030’s Doug Cope reports
Blodget would not say how she died or what her relationship was to the teenager. According to the criminal complaint, they were known to each other.
Court records indicate Ritzer was beaten and assaulted.
Students said Chism played on the high school’s junior varsity soccer team.
“We have no reason to believe any other suspects are involved,” Blodgett told reporters at a news conference Wednesday morning at the high school.
“She was a very, very respected, loved teacher,” the D.A. said of Ritzer, who graduated from Assumption College in 2011 and Andover High School in 2007.
“I just remember seeing her in the hallway and she always had a smile, like ‘hi’ to everyone and she was just an amazing person,” Megan Papagelis, a Danvers High graduate, told WBZ NewsRadio 1030 Wednesday.
“It’s just shocking to see that this could happen. Unbelievable.” (Continued…)