Six people were evaluated after feeling sick at a United States Postal Service office in the Hyde Park neighborhood of South Los Angeles Thursday.

Fire officials responded to a possible hazmat situation at the postal office on Crenshaw Boulevard near 57th Street at around 1:26 p.m..

The initial report said some 20 people were feeling unwell after a gas line was possibly struck at a construction site nearby.

The Los Angeles Fire Department’s HazMat unit said its air monitoring readings turned out to be normal.

The six people who were evaluated at the post office declined to be taken to a hospital.

No fire officials or first responders were injured during the response.