JaxPort CEO Brian Taylor abruptly resigned Wednesday as the port authority nears construction of one of the largest projects in its history, the second unexpected departure of the port’s chief executive officer in five years.

Taylor — the former maritime executive brought in to help shepherd the $684 million project to deepen the St. Johns River — made the announcement during a hastily called board meeting Wednesday afternoon. It has been just a week since Taylor was the subject of rare criticism by a board member for failing to attend two board meetings in the past year.

Board member John Falconetti, who leveled the criticism last week, had also expressed “great reservations” about the direction of the port a year ago in a stinging email to port leaders.

READ ON THE TU | JaxPort CEO Brian Taylor resigns by Sebastian Kitchen and Nate Monroe

Taylor, when asked by the Times-Union last week, said he had no concerns about his relationship with the board: “no – not at all.” And Falconetti’s colleagues on the JaxPort board brushed off the episode or were circumspect about whether they had concerns about the leadership at the port.

This is a developing story. Check back for more details.