Just as Gu Fan had predicted, the bus company realized one of their vehicles was overdue and unreachable, and had already reported it to the police.
At the same time, family members of the bus passengers also began filing police reports one by one.
Given the situation, the police didn't wait for the typical 24-hour period before starting an investigation.
Surveillance footage revealed that the bus had deviated from its designated route, heading down a secluded path.
As a result, a search team was immediately assembled to track down the bus. They eventually located a tunnel leading to an abandoned town, only to find the entrance blocked by massive boulders.
The search team had three theories. The first was that after the bus entered the tunnel, it encountered the rock blockage and turned around.
However, further surveillance footage showed that the bus did not return the way it came, indicating that it had entered the tunnel but never exited.
