Six months after a child's remains were found in a plastic bag near Interstate 45 in Madison County, authorities have released more information in hopes of getting leads on the child's identity.

The Madison County Sheriff’s Office was called to a pasture on Sept. 17, where a man had found the skeletal remains in a white plastic garbage bag inside a dark-colored suitcase, along with a pink dress, a size 4 diaper, a feeding tube and two socks.

"This child belonged to somebody," Sheriff Travis Neeley told Fox News. "It's heartless. This child had a family — a mother and a father. We want to know what happened."

(Madison County Sheriff's Office)

Neeley said he thinks the child was a girl, but DNA testing to verify gender and race is ongoing at the Dallas County medical examiner's office. Madison County is about 150 miles southeast of Dallas; Madisonville is the county seat.

The case was ruled a homicide, but the child's body had no signs of trauma, and a cause of death hasn’t been determined.

An autopsy showed that the child was 3 to 5 years old, according to the Madison County sheriff. There's also evidence that the child had long black hair.

The pink Mon Petit brand dress was a size 4T and had “Follow your dreams” written on the front, along with flowers and butterflies.

(Madison County Sheriff's Office)

The 1.2-centimeter feeding tube, which would have been surgically implanted, had the inscription “AA4069F02.” There were signs of underdevelopment in the child's skeletal frame, authorities said.

Authorities plan to contact the National Center for Missing & Exploited Children after the Dallas County medical examiner finishes the child's DNA profile.

"Somebody, somewhere knows what happened," Neeley said. "We desperately need the public's help."

Anyone with information can call the Madison County Sheriff’s Office at 936-348-2755.