Theresia Sufa, Bogor – Bogor train station and several shops inside the station became easy targets Thursday morning when commuters, who were waiting for the economy train to Jakarta, turned nasty upon hearing news of further delays.

The commuters were left stranded on three economy trains – scheduled to leave the station at 5:21 a.m., 7:02 a.m., and 7:20 a.m. – without explanation, and tempers ran high by the time an announcement was made at 7:30 a.m., but, again, with no explanation for the delays.

The waiting passengers quickly became a mob, grabbing stones and blocks of wood from the train tracks, smashing office windows and public facilities, including a Dunkin' Donuts shop inside the station. No one was hurt in the incident.

"The passengers were probably already late for work and became impatient and disappointed by the delays," the head of the Greater Jakarta division of train company Kereta Api (KA), Fating Setiawan, said.

He said the delays were caused by a faulty railway switch on one of the tracks. Bogor station master Zaenal Abidin was not in the office when the incident happened, and was unavailable for comment.

The mob calmed down after 20 minutes when an economy train finally departed for Jakarta. Ten minutes later, Police came on the scene.

"These kinds of delays happen all the time," Ahmad Karim, an economy train passenger who works in Tebet, South Jakarta, said, adding that passengers were sick of inconsistencies in the train schedule. "What's worse, officials didn't say why the delays happened or how long we were supposed to wait," another passenger, Wachid, said.

Fating said the incident would serve as a warning to the company to lift its game. "We will try to improve the maintenance of our equipment, and make sure our officials are more responsive to complaints".