Secret Service probes comment about Obama in Louisiana

Santorum was in the range of Ouachita Parish Sheriff's Office rifle Friday morningas part of their campaign through Louisiana before Saturday's presidentialRepublican primary.
While Santorum was shoot a few rounds of a gun at a paper target before delivering his stump speech, an unidentified woman in the crowd shouted: "Act likeObama."
Santorum, who wore ear protection when shooting, later told reporters he did not hear the woman as "absurd" observation.
"It's a very terrible and horrible remark, and I'm glad I did not listen," he said.

A representative of the Secret Service confirmed the incident and the fact that the agency is investigating the matter, but could not elaborate.
"We are carrying out appropriate inquiries," said George Ogilvie, public affairs officer for the Secret Service.