U.S. Rep. Martha McSally on Wednesday morning announced she has canceled a telephone town hall later today that was set to give constituents a chance to talk to her directly about health-care legislation.

In a brief statement, McSally’s office said the congresswoman was traveling to Tucson because a man described as a father figure is gravely ill.

“The man who has been a father figure in Rep. McSally’s life for the last 20 years took a turn for the worse this morning in his battle against cancer and his health is rapidly deteriorating,” read the statement from her spokeswoman, Kelly Schibi.

“Rep. McSally has to urgently fly back to Tucson this afternoon. She regretfully will have to reschedule the health care telephone town hall for the next available date. Due to this emergency, the Congresswoman will also miss votes on Wednesday and Thursday. Rep. McSally has already informed the Speaker of this unfortunate circumstance. She appreciates her constituents’ understanding during this difficult time.”

The forum was scheduled nearly three weeks after McSally, a Republican, voted in favor of the revised American Health Care Act, which narrowly passed on a party-line vote.

Several groups have staged protests outside her Tucson office since that vote.