September 25, 2012 9:34 AM EDT
WASHINGTON (AP) — The Supreme Court will decide when law enforcement officers must get a warrant before ordering a blood test on an unwilling drunken-driving suspect. The issue has divided federal and state courts around the country and the justices on Tuesday agreed to take up a case involving a disputed blood test from Missouri. In siding with the defendant in the case, the Missouri Supreme Court said police need a warrant to take a suspect's blood except in special circumstances when a delay could threaten a life or destroy potential evidence. Other courts have ruled that dissipation of alcohol in the blood is reason enough for police to call for a blood test without first getting a warrant.