Midland International Airport was evacuated for about an hour Saturday morning after Transportation Security Administration officials found military-grade explosives in a serviceman’s carry-on bag.

Midland Police bomb technician Sgt. Brian Rackow would not elaborate on what type of explosives were found, but only said they were located when a man and his family were going through the security checkpoint before boarding their plane.

The suspect has identified himself to investigating officials as active military and was in the Permian Basin to visit his family, Rackow said. The suspect and his family were on their way back to his base in North Carolina and he has been cooperative with FBI investigators, who were in charge of the case, Rackow said.

Michael Martinez, a spokesman with the FBI, would only confirm the agency was conducting an investigation and they had a suspect in custody. Martinez also would not specify what kind of explosives were found, how the man obtained them, or any information on man taken into custody.

The original call came in around 9:26 a.m. after the explosives were found while the man was going through security. TSA evacuated the terminal and the airport to perform a sweep of the airport and later allowed everyone back in an hour later, MPD Lt. Victor Rivera said.

“When people evacuated, we have them go across the airport parking lot as far as they can,” Rivera said.

There was no reported structure damage or injuries during the evacuation and operations at the airport returned to normal.

Rivera was not sure how many flights were delayed or cancelled because of the evacuation, but one family said they were held up on their flight home.

Having to stop in Houston before returning home to Midland, Steve Miller said he and his family went to Disney World for the holidays and were on their way back Saturday morning.

Miller, more frustrated with the lines at the Orlando theme park, said his family was not fully aware of the situation until they finally landed in Midland, and said the delay was worth waiting to make sure everyone could leave and arrive at the airport safely.

“They did what they were supposed to do,” Miller said.