STAMFORD — A bomb threat called in to a property management firm that oversees about seven downtown buildings led the firm to trip the fire alarms in the buildings, snarling traffic and spilling thousands of employees onto Tresser Boulevard, and Elm, Atlantic and Broad streets early Wednesday afternoon.

Police Capt. Diedrich Hohn said the property management firm RFR Realty received a call from what sounded like a woman at 12:20 p.m. saying there was a bomb in their building. Hohn said the person whispered that the bomb was set to explode in a half hour.

Not knowing which building was the target of the threat and operating under an abundance of caution, a manager at RFR then set off its fire alarms, emptying out their buildings, Hohn said.

A woman who picked up the phone at 4 p.m. at RFR offices said she was told that the company had no comment on the evacuation or the reasons for it.

Hohn said RFR sent employees out to look for anything suspicious, but found nothing, allowing the company to admit employees back into the buildings at about 1:30 p.m.

Hohn said RFR had the right to evacuate the employees from their buildings, but he would like to see a more coordinated effort with police.

“We are going to follow up with the corporate managers to re-evaluate their policies because we don’t think it is advisable to to evacuate thousands of employees onto the street when there is not a credible threat,” Hohn said, explaining that Tresser Boulevard had to be closed for a time because employees were in the street.

“In the future we think it is advisable for management to call police and coordinate with police officials before evacuating a building for such a threat. That way we can do it together in an controlled environment,” he said.

jnickerson@stamfordadvocate.com