ALBANY -- A pair of off-leash dogs that attacked a 6-year-old girl Aug. 23 have been seized by animal control, and the Contra Costa District Attorney's Office will decide whether to prosecute their owner, authorities said Wednesday.

The girl's family lives at University Village, the family housing unit for UC Berkeley students, on Jackson Street in Albany. The girl and her younger brother were outside about 8 p.m. when the girl was attacked on her way to use a restroom at an adjacent soccer field. She was treated and released at Children's Hospital Oakland for injuries on her head, calf, arms and buttocks.

The person walking the dogs, a friend of the owner, left the scene, officials said.

Officers later determined the owner's identity and contacted the owner Friday at a home in Richmond.

The dogs are approximately eight months old and of the Bull Terrier family, according to UC Berkeley police Capt. Margo Bennett. Witnesses said they were about 50 pounds each.

Neither the owner nor the person walking the dogs has been arrested, Bennett said, and she declined to identify them.

The dogs were taken into custody by Contra Costa Animal Control. They will be tested for disease and observed for aggressive behavior.

Staff writer Kristin J. Bender contributed to this story. Contact Daniel M. Jimenez at 510-262-2728. Follow him at Twitter.com/DMJreports.