A mother in Moncton, N.B. is upset after she says her son got on the wrong school bus and was taken to the wrong school, but the area school district says they’re not convinced the boy was even on the bus.

Seritha Cook says she had been driving her 9-year-old son Reagan to school since the beginning of the year, but on Tuesday he took the bus.

Reagan says he was a bit late and got on the wrong bus, which took him to École Champlain school in the francophone district instead of Forest Glen, an English school.

“I said ‘Excuse me, does this bus go to Forest Glen?’. He didn't reply back and I said it twice, then all the kids started giggling and laughing,” says Reagan Cook.

Cook says he got off the bus at École Champlain but because of the language barrier he was intimidated and didn’t want to go inside. He says he knew a family friend lived nearby, and tried to walk to their house but got disoriented.

“Around 9:00-9:30 I was out in Dieppe and I received a phone call telling me Reagan hadn't made it to school,” says Seritha Cook, Reagan’s mother.

Cook says she immediately called 911.

Ambulance New Brunswick has confirmed a passerby alerted paramedics to an unsupervised child in the area. They responded and brought Reagan home, where his mother arrived shortly after.

“I got out and I was already in a frantic state with worst case scenarios already in my mind,” says Seritha Cook.

The Francophone South School District says it cannot confirm that Reagan was even on their bus, officials say they’ve had difficulty obtaining information from Seritha Cook.

The school district did send CTV News a statement saying:

“We take the version of our school bus driver and school staff as the only credible version at this point.”

The school district also says they’re unsure how Reagan would have been able to walk away from the school without being stopped by teachers on bus duty.

As for Cook, she says she’ll be driving her son to school for the next while, until he’s confident enough to try the bus again.

With files from CTV Atlantic’s Jonathan MacInnis.