Mavericks forward Dirk Nowitzki has filed for sole custody of his ex-girlfriend's unborn child, according to a report.

Crystal Taylor was arrested May 6 at Nowitzki's home on a warrant for a theft of services charge.

"We have to determine the best options, legally, to protect her rights and those rights of her unborn child," Taylor's lawyer, Scott Renick, told the Beaumont Enterprise. "Our only focus in this case is to ensure the laws of the state of Texas are complied with to protect any and all rights Taylor has in delivery [of the baby] and her rights as a mother."