The grave is surrounded with blue tarpaulin and roads leading to the Arafat mausoleum have been closed off
Palestinian officials said the exhumation will take place in late November. They said the Palestinian Authority insists on privacy and does not want the process observed by media and others.
Swiss, French and Russian experts are to exhume Mr Arafat's body to try to clear up some of the mystery surrounding his death in November 2004.
A Swiss lab recently discovered traces of a deadly radioactive isotope on clothes said to be Mr Arafat's, reviving allegations that he was poisoned.