GALVESTON, Texas -- A fisherman found the remains of a little girl in a container on an island in West Galveston Bay, officials told KPRC Local 2 Tuesday.

Galveston County sheriff's deputies said the fisherman reported his find late Monday.

The island is in a remote area several miles west-southwest of the Galveston Causeway, officials said. It is only accessible by boat.

Investigators said decomposing remains of a girl who died from skull fractures were in the box.

"He discovered a container. He checked the container and found what he believed to be a body," said Maj. Ray Tuttoilmondo, with the Galveston County Sheriff's Department.

Officials said preliminary autopsy results revealed the body is that of a 2-5-year-old white female, 32 inches to 34 inches tall, weighing between 25 and 30 pounds.

She was wearing a pink 3/4-sleeve pullover top and a pink broom skirt. Both were the Cherokee brand sized 2T.

The girl also wore size 8.5 white and purple tennis shoes with small lights in the heels.

There is no word yet on when the girl died.

Investigators said they want whoever is responsible for the girl's death caught.

"This is important -- not only for the child but the child's family and we need to hear about what happened, when it happened, where it happened, and how we could bring some resolution to this," Tuttoilmondo said.

Detectives did not release details about the container because they felt it held clues to the case.

Anyone with information is asked to contact the Galveston County Sheriff's Office at 409-766-2222 or 866-248-8477.