George HW Bush's office has released a statement after he was readmitted to hospital in Houston, Texas.
It says: "President Bush has been in and out of The Methodist Hospital in the Texas Medical Center being treated for complications related to his bronchitis.
"He is in [a] stable condition, and is expected to be released within the next 72 hours."
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The families of all four of the victims, all of whom were men, have been informed, police said.
A motorcyclist from Nottingham has died in an accident at the Macau Grand Prix in China, earlier today.
AC/DC co-founder and ex-guitarist Malcolm Young has died aged 64, his publicist has announced.