A Texas man died early Monday, nearly one week after he and his brother were injured in a crash in Cobb County, authorities said.

Jimmy Roberts, 49, of Fort Worth, was pronounced dead at Wellstar Atlanta Medical Hospital just after 2 a.m. Monday, Cobb police spokeswoman Officer Shenise McDonald said. Roberts had been in the hospital since Wednesday, McDonald said.

Police said Roberts had been a passenger in a gray 2007 Honda Odyssey driven by his brother, 46-year-old Jeffery Roberts of Austell.

The Odyssey was heading south on Riverside Parkway near Hartman Road about 3:20 a.m., McDonald said. For reasons that aren’t clear, the vehicle left the road while going around a curve, she said. The Odyssey then went over a raised concrete curb and onto a grass shoulder before smashing into a wooden fence, a light pole and a tree.

The impact sent the vehicle spinning back into the road, and it came to a stop in the southbound lanes, officials said.

Jeffery Roberts was taken to Grady Memorial Hospital with serious injuries. The cause of the crash remains under investigation.