Philippine troopers exchange fire along a hallway at the Philippine Senate in Pasay, Philippines, on Wednesday. Aaron Favila/AP hide caption toggle caption Aaron Favila/AP MANILA, Philippines — A burst of gunfire rang out late Wednesday in the Philippine Senate, sparking chaos in the building where authorities had tried to arrest a senator wanted by the International Criminal Court in connection with a deadly government crackdown on drugs. No one was hurt, officials said. President Ferdinand Marcos Jr. asked the public to stay calm in televised remarks. Philippine Senator Ronald dela Rosa gestures to reporters at the Philippine Senate in Pasay, Philippines on Wednesday, May 13. Aaron Favila/AP hide caption toggle caption Aaron Favila/AP It was not immediately clear who fired the shots or why. The gunfire erupted as Philippine authorities tried to arrest Sen.…