GREENWICH — A report of an attempted burglary in midcountry Greenwich caused a scare at North Street School, but police assured the community that the students were never in any danger.

Police responded with lights and sirens to a report of a break-in at a home about a mile north of the school early Friday afternoon, Lt. John Slusarz said Monday morning.

Principal Jill Flood decided to shelter the students in place at North Street, which means students and staff could not go onto the playground, outside for P.E. or to dismiss students until they could contact the Greenwich Police Department.

“This was not a lockdown,” schools district Communications Director Sasha Houlihan said.

Parents reported seeing multiple police cars — and even a SWAT car — in the area of North Street School, Flood said in an sent email to parents Friday.

“The story circulating at the time was the suspect had not been apprehended and may have been armed,” Flood said in the email.

Slusarz confirmed that a contingent of police officers was sent to secure the scene at the house and see whether a suspect was there, per normal operating procedure. But contrary to the rumors circulating on social media, there was no SWAT team and no armed intruder, he said.

Flood decided to bring in students who were outside at recess and in a gym class on the field to come inside and do regular activities indoors “in an abundance of caution,” Superintendent Toni Jones said.

The suspect had left the home, about a mile north of the school, before police officers arrived, Slusarz said.

“At no time did we have any reason to believe there was a threat to North Street School,” he said. “Investigation is continuing on the original incident reported to us.”

Students were dismissed in the regular manner after police said the school was not in any imminent danger, Flood said in the email.

“It would be very uncharacteristic for the police to have not notified us immediately, and as anticipated, the incident was far away from the school with an individual trying to push in a home air conditioning unit,” Jones said. “They did not believe there was any weapon involved, and police were not concerned about our operations.”

Only the preschoolers were impacted, Jones said. They were held for a short time until the school “gained clarification” from the police department. Then the youngsters were dismissed for the day, she said.