Five months after it hired him, MARTA announced that its deputy general manager is exiting the transit agency.

CEO Collie Greenwood notified MARTA employees by email Thursday that the agency had “decided to part ways” with Josh Rowan “after careful consideration.” He did not offer a reason, and MARTA declined to comment. Rowan also declined to comment.

MARTA announced in August that it had hired Rowan as deputy general manager to oversee the agency’s capital improvement program, which includes MARTA’s expansion plans as well as maintaining and upgrading the existing transit system. Rowan previously was Atlanta’s transportation commissioner.

Greenwood also announced that Carrie Rocha will serve as interim chief capital officer, assuming Rowan’s responsibilities. She joined MARTA in 2021 and has been serving as assistant general manager for the agency’s centralized program management office. She has 25 years of transportation infrastructure project and construction management.