A Delta Air Lines flight to Columbia, South Carolina, was forced to return to Hartsfield-Jackson Atlanta International Airport on Monday morning after a "haze" was observed inside the plane, according to officials.

Delta passengers were forced to evacuated via slides at Hartsfield-Jackson Atlanta International Airport on Monday after haze or smoke was observed in the plane, according to the airline and the Federal Aviation Administration.

An emergency was declared and slides were deployed after the aircraft landed back at Hartsfield-Jackson Atlanta International Airport.

Delta Air Lines has faced a series of unsettling incidents recently, including smoke or haze in the cabin on two flights and a separate crash that injured more than 20 people.

The FAA is investigating into the incident, which follows another recent Delta mishap—a crash landing in Toronto last week.

The Delta Air Lines flight was about 30 minutes into its journey from Atlanta to South Carolina when crew members "reported possible smoke in the flightdeck."

A Delta Air Lines flight returned to Atlanta shortly after takeoff when the crew reported "possible smoke" in the aircraft, according to the FAA.

Delta flight returns to Atlanta after crew reports smoke in cabin, all 94 passengers safely evacuated via emergency slides with no injuries reported.