The victim was visiting his grandfather in the hospital at the time.
The patient needed to be transferred urgently to another hospital for further treatment.
The youths screamed in relief about how the tree almost hit them as they rode for shelter.
Nearby foreign workers and residents allegedly threw their rubbish into it, leaving the back alley in a mess.
The couple previously survived another landslide, which occurred in October 2024.
Police do not suspect foul play, but the case has been classified an unnatural death.
Drugs including 68g of cannabis were found after a search.
The tree suddenly fell into the motorcycle's path, and the rider could not avoid it.
Police officers were conducting "proactive checks" at the time.
His clients included three offenders linked to the money laundering case.