This story has been updated.
Police responded in force to White Plains High School after receiving an unscheduled lockdown notification from the school.
The White Plains Department of Public Safety said it responded in force around 2 p.m., Thursday, Oct. 31, as is always the procedure, after receiving the notification.
Police officers are clearing the building at this time, an alert from the White Plains Mayor's office said.
"There is no indication as to why the lockdown notification was sent," the alert said.
There are no injuries at the school.
The Police Department is conducting an investigation to determine the cause of the lockdown notification.
"At this time it appears to be a computer error," the alert said.
Dismal is expected to be delayed. Once the lockdown is lifted buses will be transporting students home on their usual routes.
Parents who are intending to pick up their children at school should go to the United Methodist Church on Bryant Avenue.
Once the police have cleared the lockdown those parents will be permitted to go to the school for normal pick-up.
"We are asking that parents do not come to the school until the lockdown has cleared," the police department said.
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