Authorities say a man arrested near Barack Obama's Chicago home told police officers he wanted to speak with the presidential hopeful about getting a job

Cook County prosecutor Erin Antonietti says Sengstacke approached security officers near Obama's South Side home Tuesday and told them he needed to speak with the senator about a job.

Sengstacke was asked to leave. He went back to his BMW, and then approached the officers again.

Antonietti says when police searched his car, they found a .40 caliber pistol, a bulletproof vest and ammunition. Sengstacke was charged with unlawful use of a weapon by a felon and criminal trespassing on state land.