Monica Beresford-Redman's Sisters Want Signatures on Will Tested

LOS ANGELES (CBS/AP) The sisters of Monica Beresford-Redman, the woman whose body was found in a sewer in Cancun in April, believe their sister's signature was forged on one of her wills, reports TMZ.

PICTURES: Monica Beresford-Redman Found Dead

According to the celebrity website, Monica apparently had two wills - one dated in 2004 in which she indicated that her sister should receive custody of the two children she had with her husband, former "Survivor" producer Bruce Beresford-Redman, and another dated in 2008 that grants custody to the godfather of one of the children.

The sisters filed documents Thursday in L.A. Superior Court, asking the judge to allow them to have a handwriting expert inspect Monica's signatures to determine which one is in fact her signature, reports TMZ.

The aunts had previously been denied additional visitation rights by Superior Court Judge Mitchell Beckloff, citing that it wasn't good for the children to be shuttled back and forth, as the children's paternal grandparents were appointed temporary guardians.

Mexican officials issued an arrest warrant in June for Monica's husband on charges of killing his wife at Moon Place Hotel, the Cancun resort where the family had been vacationing. He returned to Los Angeles in May even though Mexican authorities confiscated his passport.

Mexican officials have since formally requested an extradition for the reality TV producer. Bruce maintains his innocence.

Complete Coverage of Monica Beresford-Redman on Crimesider.