On Sunday night, an unnamed suspect stepped over a bike rack situated outside the White House fence. The bike racks were installed last year following a high-profile fence-jumping incident that involved an Army veteran armed with a knife. Early Monday morning, another person attempted to walk through a gate while a construction crew were leaving. According to NBC, both men were taken into custody, and the Secret Service has given the all-clear at 1600 Pennsylvania Avenue. The agency has been tight-lipped about the two breaches, which are now under investigation. The suspects have not been named. The bike rack-jumping incident took place at around 11.30pm Sunday near the southwest corner of the presidential residence, reported MyFox DC. The male suspect was arrested and charged with unlawful entry. The breach led to a 30-minute lockdown at the White House. Just before 7am Monday, another man allegedly tried to walk into a pedestrian entrance as construction workers were leaving the area. A Secret Service agent stopped the intruder in his tracks and arrested him after a brief confrontation. The White House was placed on another lockdown that lasted only a few minutes following the second incident.