NEW YORK -- A representative for Stephen Colbert says "The Colbert Report" will return today after a sudden break due to the ailing health of the star's mother.

The Comedy Central show last week substituted repeats for scheduled shows on Wednesday and Thursday.

Colbert is expected to address his absence on today. His 91-year-old mother, Lorna Colbert, is ill.

Earlier on Twitter, Colbert thanked those who had offered "thoughts and prayers."

Colbert's father, James Colbert, and two of his brothers were killed in an airplane crash in 1974.