Kentucky State Police used cadaver dogs Tuesday to search some woods near the home of missing 8-month-old Miya Tucker but reported no discoveries as nightfall approached.

“We have no evidence she’s deceased,” State Police Trooper Corey King told NBC affiliate WFIE of nearby Evansville, Indiana. “But we have no evidence she’s alive, either.”

The girl’s parents, Tesla Tucker, 29, and Cage Rudd, 30; grandparents Billie J. Smith, 49, and Ricky J. Smith, 56; and a fifth person, identified as Timothy L. Roach, have been arrested.

All are from the Reynolds Station area except Roach, who is from Owensboro, police said.

It’s not clear whether the suspects have retained legal counsel. The public defender for the area didn’t immediately respond to a request for comment. Some of the five were in court Monday, but it wasn’t clear what happened. More court appearances were scheduled for Wednesday.

State police announced the arrests of Miya’s parents, as well as her grandfather, on Thursday. All three were booked on allegations of child abandonment and fentanyl-related charges.

King, the state trooper, told WFIE that the parents were contacted at a Motel 6 in Kentucky in a room where drugs, including fentanyl pills and methamphetamine, were “in plain sight.”

Miya wasn‘t there, he said.

State police announced Sunday that Miya’s grandmother had also been arrested — they discovered she had an active domestic violence warrant on file — when they went to her residence to look for the girl.

In addition, they said, at the grandmother’s residence they saw a man, identified as Roach, toss “unprescribed” drugs under his vehicle, leading to his arrest on suspicion of having a controlled substance.

It’s not clear what relationship Roach has to the family, if any.

King told WFIE that a family member said Miya hadn’t been seen since late April. Otherwise, he lamented that those closest to had had the least information for authorities searching for her.

He said that when the girl was born in October, her umbilical cord tested positive for methamphetamine. King said Miya has three older siblings who had been removed from her household by state authorities who cited alleged drug issues.

The state Cabinet for Health and Family Services intended to remove Miya, as well, King said.

Her parents told authorities the girl had already been taken by the Cabinet, but King said that isn’t true.

King, a spokesperson for state police in the Reynolds Station area, about 90 miles southwest of Louisville, said investigators still have hope that Miya might be found alive.

But he cautioned: “The longer this goes, the more grim of an outcome this will be.”

This article was originally published on NBCNews.com