Ottawa fire’s hazardous materials unit was called Thursday morning after a package was discovered on the 15th floor of 269 Laurier Avenue, according to firefighter spokesman Marc Messier.
Seven people who came into contact with the package — three workers, a police officer and three firefighters — have been quarantined in the building after they showed possible symptoms, said Messier.
Paramedics say the three people who initially touched the package in the mailroom felt a "tingling sensation" on their hands.
They washed their hands and are no longer feeling symptoms, paramedics said.
The firefighters and police officer are being held on the 15th floor as a precaution because they did not have protection when they walked in, paramedics said.
The symptoms they exhibited didn't appear to be serious, said Messier. The remaining workers on the floor were moved to another floor, he said.
Ottawa police have closed Laurier Avenue between Bank Street and O’Connor Street and are asked to use alternate routes.