MANILA- Davao City Mayor Sara Duterte on Wednesday said her brother Paolo was not closing his doors on public service even after resigning as vice mayor.

"I look forward to the day he can serve our country again. I don't think na he is closing his doors in running again," she said in a press briefing.

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The President's daughter said no one expected Paolo to resign even as her brother had been talking about leaving public office after his name was tagged in alleged corruption at the Bureau of Customs.

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Paolo resigned from his position on Christmas Day, citing "recent unfortunate events in my life that are closely tied to my failed first marriage" as the reason.

"These, among others, include the maligning of my reputation in the recent name-dropping incident in the Bureau of Customs smuggling case and the very public squabble with my daughter. The other person in this failed relationship is incorrigible and cannot be controlled and I take responsibility for all that has happened as a result of a wrong decision to marry at a very young age," he said.

The vice mayor had also publicly feuded with his daughter Isabelle, from his first wife.

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Sara said Paolo's resignation letter has been submitted already to Malacañang.

"Nothing will be final until the resignation is accepted by the President," she said.