SAN ANTONIO -

A grandson of Sen. Leticia Van de Putte has passed away.

5-month-old Rex Van de Putte died Tuesday morning in Austin, the senator's spokesman, Lee Nichols, said.

A cause of death was not known.

"The Senator and her husband, Pete, are heartbroken, and ask that the public respect the family's privacy in this tragic time," a news release said. "Senator Van de Putte and Pete ask everyone to pray for their family, including Rex's parents, Gregory and Samantha, and his brothers, Elliot and Asher."

Funeral arrangements are pending.