A 10-month old girl died Friday after being thrown to the floor at least twice by a 7-year-old girl at a Pittsburgh daycare center, police said.

Marcia Posten was pronounced dead at Children's Hospital of Pittsburgh, said Lt. Daniel Herrmann.

The infant was found unresponsive at about noon at a daycare center run out of a private home in the city's Garfield neighborhood, he said.

"Right now, we're discussing what we should do with the (7-year-old) girl," Herrmann said. "She is not going to be arrested." He said the girl will likely be evaluated by a psychiatrist.

Authorities haven't decided whether the girl will be returned to her parents or turned over the Allegheny County child welfare officials.

Police said a 20-year-old daycare provider was with six children in the basement of Bray's Family Day Care when she went upstairs to change the diaper of a 1-year-old.

The woman told investigators minutes later she heard something and went back into the basement and noticed Posten was on a love seat and not in the child's seat where she had left the infant, police said. The woman said the infant was unresponsive and appeared to have blood near her ears.

The woman told police she called 911 immediately.

Investigators later learned the 7-year-old girl had taken infant out of the child's seat, police said.

The 7-year-old said she picked up Posten and threw her at least twice to the basement floor, which is made of cement but covered by carpet, according to police.

Bray's Family Day Care was licensed to care for up to six children from infant to 12 years old, Herrmann said. The city's public welfare department licenses private homes as daycare centers to care for up to six children.

Bray's Family Day Care was last licensed for two years in October 2006. It will remain open for now, Herrmann said. The county district attorney is evaluating the case to see if any charges against the daycare center operator are warranted, Herrmann said.

An autopsy is scheduled for Saturday.