A new report about the disappearance of autistic teen Avonte Oquendo shows that a series of errors were made by school officials that led to his disappearance, and subsequently his death. 

An investigator said Thursday that a school safety agent was distracted by a hug, and a principal refused to order a lockdown of the school, according to the Columbus Ledger Inquirer. 

Richard Condon, the special commissioner of investigation into city schools, also said a door was left open by an unknown visitor at the Queens school. In addition, a teacher failed to pass on a warning by Avonte's mother that he was prone to wander. 

Avonte's mother, Vanessa Fontaine, said she was furious that a form she gave her son's teacher saying he is prone to running away was ignored. 

"You fill that out assuming that she's asking this question because she wants the information to share with other teachers to help your child out," Fontaine said. She added, "Someone has to pay for this mistake."

The new report did not recommend disciplinary action, however, it referred the findings to city and state education officials and to the district attorney's office in Queens, which is reviewing the report. The city's Department of Education is also studying the report in an effort to prevent any more tragedies from occurring. The department said it will be implementing more security procedures, such as improved training for teachers and equipment such as two-way radios. 

Avonte, 14, who was nonverbal, attended a school for special education students that shares a building with two other schools. 

An extensive search was performed by police and volunteers after his disappearance on Oct. 4, but his decomposed remains were found in the East River in January.

The report of the day Avonte disappeared goes into detail about how he was able to run out of his school.

School safety agent Bernadette Perez told investigators that she saw a boy in the lobby, but did not know he was a special needs student who was nonverbal. She said that she called out "Excuse me!" but the boy did not respond. She said that she could not chase him down because she could not leave the front desk unattended. 

The father of another student told investigators that she saw a boy walk by Perez because Perez was distracted from a hug by her daughter. 

Once Avonte was determined missing, the assistant principal of the school requested that the school be put on soft lockdown to search for Avonte. But Edgar Rodriguez, a principal of a high school in the same building, would not impose a lockdown because he did not want to upset students. 

The family of Avonte have filed a notice of claim to sue the city over his disappearance. 

"The city of New York is as obviously at fault in this particular incident as it could possibly be," family lawyer David Perecman said.

The United Federation of Teachers said they are currently reviewing the report.