A 66-year-old worker was critically injured Wednesday when a trench on a Kailua-Kona street caved in, the Hawaii Fire Department said.

The man identified as a worker for E.M. Rivera was working in the trench when the wall of a roughly 8-foot utility trench collapsed, a fire official said.

The man had difficulty breathing and trauma to his face, the Fire Department said.

He was initially in serious condition, but his condition worsened to critical when he was being transported by ambulance to  a hospital, the fire official said.

The company had been doing work for Hawaii County on Kaiminani Drive when the cave-in occurred, according to the Fire Department.