MOSCOWsecondhandarcademachinesforsale, Aug. 15 (Xinhua) -- Russia's Federal Security Service (FSB) said on Thursday that it has foiled a terrorist attack attempt on an Interior Ministry facility in the Tyumen region in West Siberia.

"The FSB jointly with the Investigative Committee has foiled an attempted terrorist attack in Tobolsk of the Tyumen region," the FSB said, adding that two Russian citizens plotting to detonate an explosive at the Interior Ministry facility were arrested.

Two improvised incendiary devices and a self-made explosive were seized during the raid.

The authorities have initiated a follow-up investigation, the FSB said.■