Professional baseball player Ryutaro Hatsuki of the Hiroshima Carp has been arrested for allegedly using etomidate, a regulated substance known by some as a "zombie cigarette" or laughing gas, according to police.Hatsuki, 25, denied the allegation that he used etomidate around Dec. 16, the police said following his arrest on Tuesday.Police revealed a urine test came back positive for the substance and said they are investigating how he obtained the drug."We offer our sincere apology," the Carp said in a statement. "We're verifying the facts and will give our full cooperation to the investig…READ FULL ARTICLE