Former first lady Barbara Bush was hospitalized Tuesday with early signs of pneumonia.

The 88-year-old Bush was in stable condition Tuesday night at Methodist Hospital in Houston, KPRC-TV reported. She was admitted earlier in the day for treatment.

The hospital confirmed the report to ABC News.

Bush the wife of former President George H. W. Bush and was first lady from 1989 to 1993. She is also the mother of former President George W. Bush and former Florida Gov. Jeb Bush.