The cause of Sherin's death is still pending, a spokesman for the police department in Richardson city, Texas, told Fox News.
Sherin's body, found in a culvert on October 22, has been sent to a funeral home by the Dallas medical examiner, the report said.
A spokesman for the Dallas County Medical Examiner said the body of Sherin was released on Saturday but did not say who has custody of the body.
An online petition had requested authorities not to release Sherin's body to her foster parents and allow the people to give her a proper burial that she deserves.
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Sherin's body was found inside a culvert in Richardson city, nearly 1 km from her home.
Her body was discovered by cadaver dogs over two weeks after she went missing from her home. Sherin was adopted by the couple from India last year.
Mathews changed his story on Sherin's disappearance, initially claiming he left her outside at 3 am on October 7 as punishment for not drinking her milk.
Mathews' latest claim is that he tried to "physically assist" Sherin in drinking her milk, but she choked on it and died.
Sherin's foster mother, Sini, has denied any role in the girl's death and says she is cooperating in the investigation.
Meanwhile, over two dozen people lit candles and said a pray for Sherin at a vigil on Saturday at the India Association of North Texas in Richardson, NBC Dallas reported.
The vigil was attended by Indian community leaders in North Texas, as well as a member of the Consulate General of India in Houston.
The CGI representative said he was not authorised to speak about the case but the Indian mission here has tweeted that it is actively involved in the investigation.
"It's a tragedy the whole life and you know a lot of people failed her. So it's time for us to pray, for her get together and hope that and pray that this never happens again in this entire community," said Salman Farshori, president of the India Association of North Texas.
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