As a result, three people were killed and 29 were injured.
Then the Tapanuli Selatan Police, AKP Muriyasnal said, based on the witnesses of the accident allegedly because the driver was sleepy.In addition, the steering wheel and bus brakes are also not working properly.
"Based on the testimony of the witnesses, the bus driver is also suspected to be sleepy and the brake and stir are also not functioning properly, even before the incident, this unlucky bus has also entered several times," he explained through cellular phone connection on Thursday (23/11/2017 ).
He said, until now the police are still conducting an investigation to uncover the cause of the accident.
Until this news was revealed, it said the bus driver fled and the Tapsel police station was still pursuing the driver.
This nahas event happened on Thursday (23/11/2017) at 04.00 WIB.
The ALS bus came from Medan to Padangsidempuan carrying 32 passengers.
The bus allegedly lost control and plunged into a 22-meter depth.
Three passengers died on behalf of Bisma Sari Siregar (70) residents of Mandailing Natal, North Sumatra, Taufik (57) Suka Maju, Medan Johor and Ahmad Khumar (24) residents of Mandailing Natal.
While other victims suffered broken bones and severe injuries. They are treated in Sipirok Public Hospital.
"They immediately evacuated us to Sipirok Hospital, one died at the scene and two more died at the hospital," he said, given a report from abdul.