The U.S. government is preparing to potentially evacuate most U.S. embassy personnel from Niger, according to a U.S. diplomat and a U.S. official familiar with the discussions.

A final decision to evacuate has not yet been made, said the officials, who were granted anonymity to discuss sensitive deliberations. The U.S. diplomat said the decision was imminent, however.

The country is in the midst of a military coup, but the situation on the ground in the capital, Niamey, is relatively stable, the diplomat said.

The potential ordered departure would involve most, but not all, embassy personnel, the people said. This would include spouses, children and many U.S. diplomats who are not key to critical embassy functions, the diplomat said.

A State Department spokesperson did not immediately return a request for comment.

Already this week, 20 staffers with the U.S. Agency for International Development were evacuated, the diplomat said.

As of Tuesday, Pentagon spokesperson Brig. Gen. Patrick Ryder said he was not aware of U.S. forces participating in an evacuation operation, and that there was no “imminent threat” to U.S. personnel or American citizens in the country.

“Obviously, we’re a planning organization, we’re always going to plan for various contingencies, but we continue to keep a close eye on the situation there,” Ryder said. “We continue to encourage American citizens who are in the country to stay in close contact with our embassy there.”

The U.S. military has suspended most of its training and advisory mission with the Nigerien armed forces, Ryder said. Most of the 1,100 U.S. troops in Niger have been restricted to their bases for force protection reasons, according to a Defense Department official.