Sinaloa at a standstill amid cartel war

The past couple of weeks have been deadly in the northern Mexican state of Sinaloa. More than 100 people have been killed or gone missing since Sept. 9, when rival factions of the Sinaloa Cartel began clashing violently. In the capital of Culiacan, schools, restaurants and shops have had to close. The World's Tibisay Zea has the story.