A construction worker who was injured in an accident Friday at the construction site of the Arundel Mills slots parlor has had his condition upgraded, a Maryland Shock Trauma spokeswoman said Monday.

Darbin Suazo-Jimenez, 25, of Manassas, Va., is in serious but stable condition, the spokeswoman said.

Over the weekend, Suazo-Jimenez had been upgraded from "critical" to "fair" condition, the hospital spokeswoman said, but his status deteriorated to critical Sunday night.

Suazo-Jimenez had been taken to Shock Trauma on Friday morning with life-threatening injuries after a wall, which was made of 25 tons of precast concrete and measured about 30 feet tall and 40 feet wide, suddenly collapsed at the work site.

The accident killed another worker, Leon Ray Sax, 27, of Hanover, Pa., who became trapped inside a bucket lift when the wall fell, Anne Arundel County Fire Department Division Chief Michael A. Cox said.

The incident occurred just before 10 a.m. on Friday, when someone called 911 to report the accident on the mall grounds in the 7000 block of Arundel Mills Circle in Hanover, police said.

Inspectors with the state agency charged with ensuring workplace safety are investigating the accident, the second time this month in which a worker was injured at the site.

Baltimore Sun reporters Don Markus, Nicole Fuller and Liz F. Kay contributed to this article.