This marks the second smoke-related issue to impact a Delta flight within a week, just two days after an Australia-bound flight returned to Los Angeles due to smoke on the plane.

A Delta plane was forced to make an emergency landing on Monday after passengers observed a “haze” inside the aircraft. Delta Flight DL876 was heading from Atlanta, Georgia to Columbia, South Carolina around 11:20 am on Monday when the incident took place.

A Delta Air Lines jet made an emergency landing in Atlanta Monday morning, evacuating passengers via slides on the runway, after haze or smoke filled the cabin, airline and federal officials said.