UPDATE 1-Doctor not a suspect in Michael Jackson death

* Police say personal doctor not a suspect

* Funeral may take place on Wednesday

* Obama sends letter to Jackson family

* Entertainment world to honor Jackson at BET Awards

By Mary Milliken and Alex Dobuzinskis

LOS ANGELES, June 28 (Reuters) - Los Angeles police investigating Michael Jackson's sudden death said on Sunday they do not consider his doctor a suspect despite having questioned him about his presence at the time of the pop idol's fatal cardiac arrest.

The Jackson family had yet to announce funeral arrangements for the 50-year-old King of Pop. But a family friend told Reuters that a service could be held on Wednesday and that the family wanted to bury Jackson at his famous Neverland Ranch.

The death of one of the most gifted musical performers of his generation prompted tributes and condolences, from U.S. President Barack Obama to legions of fans in Hollywood. Top performers were set to honor Jackson at the BET Awards in Los Angeles on Sunday.

It was still unclear what, if any, role Jackson's prescription medicines might have played in his sudden death on Thursday. The family carried out its own autopsy on Saturday after the Los Angeles Coroner said it would need four to six more weeks to determine the exact cause of death.