According to the Benton County Sheriff’s office, a small plane has crashed and its pilot, Cory Patterson, is being held by authorities after making threats to deliberately crash into a Walmart in Tupelo, Mississippi.

Also read: Who is Corry Patterson? Man threatening to fly plane into Walmart

Gov. Tate Reeves said on Twitter that Mississippi state law enforcement was “closely monitoring” the situation. The Federal Aviation Administration stated that it had also been keeping an eye on the issue.

Also read: Airline pilot threatens to crash plane into Walmart

“State law enforcement and emergency managers are closely tracking this dangerous situation. All citizens should be on alert and aware of updates from the Tupelo Police Department,” Reeves tweeted.

Flightradar24 reported earlier on Saturday morning that it looked like the jet had crashed in or close to Curtis Lake, which is located 5 miles north of Gravestone, Mississippi. When it vanished, more than 300,000 people were keeping an eye on it on flightradar24. The jet crash has not yet been officially confirmed by police.

Also read: Watch: Video of pilot threatening to crash plane into Walmart in Tupelo

Around 5 am local time, the Tupelo Police Department received a report that a pilot of an aircraft, probably of the King Air variety, was passing above the city. According to a police statement, the pilot made contact with E911 and threatened to deliberately crash the aircraft.

To the greatest extent possible, police helped Walmart and a nearby Dodge’s vacate their establishments and disperse customers. The local police force and all emergency services are on high alert.

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“Citizens are asked to avoid that area until an all clear is given. With the mobility of an airplane of that type the danger zone is much larger than even Tupelo,” police said in a statement.

Flightradar24 revealed that the pilot had been flying erratically between 500 and 1500 mean sea level, quite low, and much to the northwest of Tupelo.

Also read: Where is Tupelo?

At this time, the current condition of the pilot is unknown.