Hazmat teams responding to the Planned Parenthood in Sarasota, Florida, found cleaning chemicals and baby powder formula after some people at the clinic fell ill Monday, police said.
Sarasota Police Department spokeswoman Genevieve Judge said in a news release the clinic was evacuated at 10:45 a.m. Two hazardous materials teams responded.
Forty-two people were evacuated, seven of whom were hospitalized for shortness of breath, Judge said. One other person declined medical assistance.
A law enforcement official told NBC News that over the weekend, a cleaning crew used a powerful chemical to clean the floors, one containing an ammonia compound. The chemicals were left near an air intake in the building.
When the ventilation system was turned on Monday morning, the fumes circulated and caused some to react adversely, the official said.
"At this time, there is no criminal investigation," Sarasota police said in a statement. "Workers are expected back inside the building this afternoon."
The clinic provides family planning services, preventive health care, testing for sexually transmitted diseases and abortions.
