DALLAS - A Fort Worth-area woman now believed to be the mother of three babies whose remains were found beneath a mobile home porch and nearby has been arrested.

Authorities say that's after DNA tests tied 36-year-old Rachel Lynnette New to the decomposed bodies. New was released on $70,000 bond today after her arrest yesterday. Tarrant County Sheriff's spokesman Terry Grisham says she's charged with three counts of tampering with evidence.

Two sets of infant remains were discovered this summer under the porch of a home near the Rendon community, just southeast of Fort Worth. That's where New and her brother had been living. Another set was found nearby last year.

Investigators collected DNA samples from 23 people with ties to the property, and authorities say test results showed Rachel New was a match to the DNA recovered from the remains.

New and her brother have previously denied to detectives that they knew anything about the remains. And though she didn't deny being pregnant, Grisham says that "when the topic got around to DNA and babies, she didn't want to talk about that." He says authorities do not know who fathered the children.