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.

ATLANTA (AP) — A Delta Air Lines flight returned to the Atlanta airport soon after taking off Monday when crew members reported a smoky haze inside the cockpit, according to federal officials.

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.