Former President Joe Biden has sparked dementia fears after he appeared "confused" at ex-Vice President Dick Cheney 's funeral in Washington, D.C., RadarOnline.com can reveal.

Biden spent his 83rd birthday attending the prominent Republican's funeral on Thursday, November 20. The ex-president, who is currently battling cancer, stiffly walked into the National Cathedral holding his wife Jill's hand as she led him to their seats. Article continues below advertisement

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Biden appeared to have difficulty walking as he arrived at Cheney's funeral.

Instead of following the former first lady down their row, Biden shuffled past her and greeted a row of guests seated

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