Someone broke into 32 buses at the Miami-Dade County Public Schools' bus depot, stealing the batteries from the vehicles, according to a School Board spokesman.
The Miami-Dade School Board said the break-ins occurred at the school bus depot in the 7000 block of Southwest Fourth Street.
School bus drivers arrived to work Tuesday morning and found that their buses would not start. Officials discovered that someone had stolen the batteries from 32 buses.
The school district put other buses into service to complete the bus routes. School officials said as many as 800 students were affected during the morning commute, and possibly as many as 400 were affected Tuesday afternoon.
The affected children were elementary, middle and high school students.
School representatives said they tried to notify parents Tuesday morning, but it is unclear how many they reached before the children arrived at the bus stops.
No arrests have been made. School officials are investigating whether the theft may have been captured on surveillance video.
As of 5 p.m. Tuesday, 15 of the buses had been repaired, but 17 were still not working. The school board said all of the buses likely will be fixed by Wednesday morning, although they cannot guarantee it. Parents are advised to call their children's schools before taking the students to the bus stops.