AOL: A Sunday school teacher was arrested on suspicion of kidnapping and killing 8-year-old Sandra Cantu, whose body was found in a suitcase in an irrigation pond.

Melissa Huckaby, 28, was arrested at 11:55 p.m. Friday, about five hours after she drove herself to the local police station at the request of officers, said police Sgt. Tony Sheneman.

"She gave enough information to us during the course of the interview that probable cause was there to her," said Sheneman. No other arrests were made.

Sandra disappeared on March 27 and hundreds of volunteers and law enforcement officials turned out to search for her. Pictures of the girl with dark brown eyes and light brown hair were posted all over Tracy, a city of 78,000 people about 60 miles east of San Francisco.

On April 6, farmworkers draining an irrigation pond found the suitcase.

The slain girl's aunt, Angie Chavez, said in a phone interview with The Associated Press early Saturday that she was happy to learn of the arrest.

"I want to know why she did it, if she did it," Chavez said.

Huckaby had previously told The Tracy Press that Sandra visited her home on the day of her disappearance to play with her 5-year-old daughter. But Huckaby said she'd turned Sandra away because her daughter needed to pick up her toys and Sandra went to another friend's home. Huckaby also said she had left her suitcase in the driveway that day, and that it was missing.

The Tracy Press reported that Huckaby was released Thursday from Sutter Tracy Community Hospital, where she spent several days in intensive care for what she described as "internal bleeding."

Huckaby is a granddaughter of Pastor Clifford Lawless, whose Clover Road Baptist Church was the subject of a police search. Huckaby taught Sunday school at the church and lived with Lawless in the Orchard Estates Mobile Home Park that also was Sandra's home.

Huckaby's family had been questioned at length during the investigation, and their home and vehicles had been searched, Sheneman said.

Huckaby was scheduled to appear in court on April 17 to check in with a county mental health program as part of a three-year probation sentence for a petty theft she pleaded no contest to. In an interview with the newspaper on Friday, Huckaby said someone else by the same name was facing charges for the attempted November theft from Target.