KANSAS CITY, Mo. -- Among the flowers and balloons honoring a little girl known for years only as Precious Doe, a handwritten sign announced the news: Her real name was Erica Michelle Marie Green.

Just shy of 4 years old, Erica had long been anonymous in death, her headless body abandoned beside a road. But she was not forgotten.

A makeshift memorial of poems, teddy bears and flowers was eventually replaced by a permanent memorial to Precious Doe. An artist's rendering continued to circulate, showing her neat cornrows and big brown eyes. And in the past week, a newspaper ad solicited the tip that police said led to the arrest of Erica's mother and stepfather on murder charges.

"We have closure," police chief James Corwin said Thursday. "The little girl that we've known for four years as Precious Doe has a name."

Her mother, Michelle M. Johnson, 30, and stepfather Harrell Johnson, 25, were charged with murder and endangering the welfare of a child. Police said the mother told them Harrell Johnson killed the girl with a kick to the head and used hedge clippers to sever her head.

Both suspects were being held in Oklahoma, where they live.

Police said a tip enabled them to identify Erica, but they would not elaborate. And they gave no motive for the little girl's slaying.

The girl's body was found near an intersection on April 28, 2001. Days later, her head was found nearby, wrapped in a trash bag.

In the months after she became known as Precious Doe, hundreds attended candlelight vigils, volunteered to answer witness hot lines and passed out fliers with an artist's rendering of the girl. The FBI took blood samples from family members of missing black girls, and the case was featured on television's "America's Most Wanted."

Authorities said the little girl was killed in Kansas City, where the family had been staying with a friend. According to court papers, Johnson said her husband kicked Erica in the head, and they left her on the floor for two days. They did not seek medical help, she said, because both had warrants out for their arrest.

The child died, and the couple carried the body to a church parking lot, then through the woods, where the stepfather cut the girl's head off with hedge clippers, police said.

The break in the case apparently came after community activist Alonzo Washington, who has long championed efforts to find out who the little girl was, placed another advertisement seeking leads in a local paper.

"There's something about it that just bothers me that a child could be thrown away and people forget about it," said Washington, who has worked to raise awareness of missing black children.

Washington said a grandfather of one of the individuals involved in the case came forward, talking with him and detectives last weekend. He said the source, who had spoken to police before on the case, sent photographs of the child as well as hair samples from the child and the mother.

Police and prosecutors refused to confirm specifics or identify the source. Washington declined to be more specific.

A photo displayed by police during a news conference, showing the girl with a slight smile and adornments in her braided hair, may have been a picture of the wrong child. Oklahoma police saw the picture and said it appeared to be one of the girl's cousins.

Johnson was being held on $500,000 bail in her hometown of Muskogee, Okla., and will be brought to Kansas City as soon as possible, prosecutor Michael Sanders said.

The prosecutor asked that her husband be held without bail.

Oklahoma records show Michelle Johnson has convictions for theft and forgery. The stepfather has convictions for several offenses, including assault with a dangerous weapon and possessing a sawed-off shotgun.