A brother and sister have been indicted in connection with the placement of a possible explosive device at MacDill Air Force Base in Florida, Fox News Digital has learned.

The FBI said Alen Zheng, who is believed to have planted the device, is currently in China. He is facing charges of attempted damage to government property by fire or explosion, unlawful making of a destructive device and possession of an unregistered destructive device.

FBI Tampa also arrested his sister, Ann Mary Zheng, who is charged with accessory after the fact and tampering with evidence.

She is accused of hiding or damaging a 2010 Mercedes-Benz to prevent its use in legal proceedings, court documents show.

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“Today’s indictments are the result of tremendous investigative work from our FBI teams and great coordination from our state, local, and federal partners across the board,” FBI Director Kash Patel said in a statement to Fox News Digital.

“No one who targets our brave service members and military facilities will ever get away with it — and this FBI will pursue all those responsible for the incident at MacDill Air Force Base to the ends of the earth,” he added.

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The indictments were unsealed Thursday morning, and a news conference is expected Thursday afternoon.

On March 16, FBI Tampa had announced that a suspicious package had been discovered outside the MacDill visitor center.

MacDill Air Force Base houses the headquarters of U.S. Central Command (CENTCOM), which is currently handling Operation Epic Fury against Iran.

The base also houses U.S. Special Operations Command (USSOCOM), which oversees all special operations forces across the Department of War.

This is a developing story. Please check back for updates.