The parents of a boy with autism are speaking out after a city school bus left their child at the wrong school.

They tell NY1 that 5-year-old Nicholas was picked up an hour late and left at the wrong school in Brooklyn on Thursday.

It happened on the first day that Logan Bus Company took over the route for P.S. 282 in Park Slope.

Nicholas' father, Peter, described getting the nerve-wracking call from an school employee, a half mile away from where his son should have been.

"I said, 'Is he OK? Where is he?' And they said, 'He's OK. He's with us at P.S. 133 at Baltic Street.' I said, 'What the hell is he doing there?'" Peter Hionas said.

"I think OPT and the bus companies need to work together and be accountable because it can't happen again," said Maria Hionas, Nicholas' mother.

Logan Bus responded in a statement, saying it has worked with the school and Office of Pupil Transportation to make sure it doesn't happen again.