More than 50 people hospitalized after 'hazmat incident' at Sharp Services drug packaging facility in Pennsylvania

At least 52 people have been hospitalized after a 'hazmat incident' at a drug packaging facility in Pennsylvania. 

The patients reported suffering from nausea, vomiting and headaches after a 'chemical smell' moved through part of the facility. 

The incident happened at Sharp Services at 7451 Keebler Way in Upper Macungie Township. The company's website says the facility is used for the packaging a distribution of drugs.

Lt. Pete Nickischer, of the Upper Macungie Township Police Department, said hazmat crews were still working to ascertain the cause of the incident on Friday afternoon.

A fire truck pictured in the parking lot of Sharp Services in Upper Macungie Township after at least 51 people were hospitalized following a 'chemical smell' at the drug packaging facility

The incident happened at Sharp Services at 7451 Keebler Way. The company's website says the facility is used for the packaging a distribution of drugs

A hospital in Allentown received 22 of the people for checks and said they were stable and would be discharged.

Fire crews searched for a gas leak but none was found. 

A spokesman for Lehigh Valley Health Network said one its hospitals admitted 20 patients and another took in ten.

Some had minor symptoms including headaches or throat irritation, while others were checked as a precaution. 

Crews are reported to have checked the building and allowed people to reenter, but the cause of the incident has not yet been revealed.