A man carrying Mace roamed for nearly 17 minutes inside the secured White House perimeter before he was taken into custody March 10th near the South Portico entrance, the Secret Service said.

The man did not enter the White House, the agency said, without further explaining the delay in his capture or details about alarms, protocols or responses that may have failed.

President Trump was in the residence at the time of the breach.

Jonathan T. Tran, 26, of Milpitas, Calif., was detected crossing a five-foot outer fence near East Executive Avenue and the Treasury Department complex at 11:21 ppm and was arrested at 11:38 pm, the agency said.

The incident is believed to be the first intrusion on the White House grounds since Trump took office. Last year, the Secret Service added small spikes — or “pencil points” — to the top of the six-foot fence that surrounds the White House complex.

The agency also announced a plan to raise the height of the fence to 11 feet by 2018.

To approach the mansion, Tran scaled two additional barriers, according to the Secret Service account, an eight-foot vehicle gate, then a 3 ½ foot fence near the southeast corner of the East Wing.

Court documents filed at the time of his arrest omitted any reference to alarms sounding and gave only an account by the uniformed officer who saw and arrested Tran, up to 200 yards from where he had entered and after he at one point hid behind a pillar.