Ronald Reagan, the 40th President of the United States, has died at his Los Angeles home after battling Alzheimer's disease for a decade.
He was 93.
In a statement, former first lady Nancy Reagan said: ``We appreciate everyone's prayers.''
A spokeswoman says Mrs. Reagan, along with children Ron and Patti Davis, were at the couple's home when Reagan died at 1 pm pacific time of Pneumonia complicated by Alzheimer's disease.
Son Michael arrived a short time later.
President Bush was notified of Reagan's death in Paris, and the U.S. flag over the White house was lowered to half-staff.
Reagan's body is expected to be taken to his presidential library and museum in Simi Valley, California.
It will then be flown to Washington to lie in state in the Capitol rotunda.
His funeral is expected to be at the national cathedral.