Federal prosecutors say a man is arrested after TSA officers find an explosive device in his carry-on luggage at Sacramento International Airport as he tries to go through a security checkpoint. Sources report that the device is described as capable of damaging an aircraft, and the man is taken into custody on charges related to bringing an improvised explosive device to the airport. One outlet says the investigation includes additional items found with the device, including a phone set with a countdown timer and a message in the luggage, which prosecutors characterize as cryptic. Prosecutors also allege the man may have been plotting to set off explosives on a flight over the weekend, with the planned travel described as a flight to North Carolina. Details about the man’s identity and the exact language of any charges are not fully consistent across the summaries provided. The case is handled by federal authorities, and prosecutors are presenting the allegations in court. The reports agree on the central event: a suspected explosive device is discovered at the security checkpoint, leading to the man’s arrest before he boards a flight.