Joe Jackson has been hospitalised after reportedly suffering a stroke on his 87th birthday.
The showbiz patriarch - whose children include Janet Jackson and the late Michael Jackson - was admitted to Albert Einstein Hospital in Sao Paulo, Brazil, yesterday after feeling dizzy and losing his vision, TMZ reports.
Joe is believed to be still undergoing tests and his family are trying to decide whether to have him flown back to the US for further treatment.
It is unclear as yet whether his loss of vision is only temporary.
If the music manager - who also suffers from diabetes - has suffered a stroke, it is his fourth.
He previously suffered a mild stroke in November 2012, and was placed under observation at a Las Vegas hospital after complaining of pains in his head and difficulty standing.