the federal bureau of investigation established that igrić had boarded the greyhound bus in chicago. the bus was carrying 39 passengers at the time, and was travelling from chicago to its final destination of orlando, florida. at 4 a.m., while the bus was travelling on interstate 24 near manchester, southeast of nashville, tennessee, igrić lunged at the driver and slashed his throat. he proceeded to grab the steering wheel in an attempt to direct the vehicle into oncoming traffic.