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Homicide detectives are investigating after an injured man stumbled into a south city convenience store and collapsed overnight.  Police were called to the 7-11 at Gravois and Bates just before 1 a.m.. Police say the man had been shot, but they aren't sure whether the shooting happened at the 7-11 or another location. Fox 2 reports that St. Louis Fire Department medics rushed the injured man to the hospital, but doctors pronounced him dead shortly after he arrived. So far the victim has only been identified as an Asian male, about 30-years-old. Police have no suspects. 

JEFFERSON CITY, Mo. (AP) - Missouri has received a federal grant to test a new type of road treatment intended to keep cars from slipping off highways when it rains or snows.

   The Missouri Department of Transportation says it will apply the "high friction surface treatment" to a pair of curves on U.S. 54 and Missouri 179 in Jefferson City.

   If the agency has enough money, it may also apply the treatment at two sites on Interstate 44 near Rolla.

   Missouri received $150,000 for the project from the Federal Highway Administration. A total of 13 states and the District of Columbia received money through the grant program that encourages innovative technologies on roads and bridges.

JOPLIN, Mo. (AP) - A new engineering report says Joplin homes destroyed in the 2011 tornado were poorly built to withstand wind.

   The American Society of Civil Engineers study also shows that most of the damage caused by the Joplin tornado that killed 161 people and leveled a wide swath of the southwest Missouri city was caused by wind speeds of 135 mph or less, which is equal to an EF-2 tornado.

   The Joplin Globe reports (http://bit.ly/102NFhC ) the ASCE team concluded that because the structures were poorly built to withstand wind, flying debris from houses made damage worse.

   The report says if the houses in the tornado zone had been built with hurricane ties, which fasten the rafters and trusses to exterior walls of a house, the damage would have been reduced.