A call to the mortuary was not immediately returned early Sunday. The arrangements were to be private, according to Ledger's publicist.
Ledger, 28, died Tuesday in his New York apartment. His body was moved from a police-barricaded funeral home in Manhattan amid a swarm of cameras and reporters Friday afternoon.
Several people were seen entering the chapel where Ledger's coffin lay, including the actor's former girlfriend, Naomi Watts, the paper reported. The Daily News and http://www.etonline.com said members of Ledger's family also visited the mortuary.
The cause of death will not be known for at least several more days, after medical examiners complete toxicology tests. Authorities suspect a possible drug overdose. Several prescription drugs were found in the Manhattan apartment where Ledger's body was found.