Do the Japanese always cremate the dead?

In Japan, most local governments have ordinances prohibiting burial for public hygiene reasons.
Some cemeteries allow burial for believers of islam and other religions.
A foreigner's death in Japan is reported by the police to the embassy and related people when he or she is identified.
Once the surviving family receives the body, they can either request burial permission in Japan or have the body sent home.
In case there is no one to receive the body, the chief of the municipality takes care of the funeral.