SALEM, N.H. — The 23-year-old Boothbay, Maine, resident injured in a tire explosion at a Sears Auto Center on Saturday is improving.

Adam Sproul, who received a head injury in the incident, was scheduled to be moved Sunday from the intensive care unit at Boston Medical Center to a regular room, said his grandmother Chris Sproul of Boothbay.

“He has eaten a little. He said he was starving,” she said.

The accident happened just before 8 a.m. Saturday when a large truck tire that Justin Almon, 22, of Sandown was working on exploded.

Almon was rushed to the hospital, where he died from head injuries.

According to a 911 call released by police, a caller reported that a worker was filling up the tire when it “exploded off the machine” and hit both men in the head.

Salem police Sgt. Chad Clark told WMUR-TV that Almon’s colleagues are still upset.

“They are pretty shaken up by the whole ordeal,” Clark said. “When you work closely with someone all day long, it hits you hard.”

Clark said both men were unconscious when first responders arrived.

Salem police and the U.S. Occupational Safety and Health Administration are investigating.

Sears said in a statement that it’s working with authorities and extends its thoughts and prayers to both families.