Nine of the deaths took place April 4, making it one of the bloodiest days in Cancun's history, according to Noticaribe, a news organization based in Quintana Roo. The site reports that 16 people have been killed in Cancun so far this month. The tropical coastal town, which is perched along the Caribbean Sea in southeastern Mexico, attracts millions of Americans to its warm beaches each year. The U.S. government issued a travel advisory earlier this year for several popular tourist spots in Mexico, including Cancun — which is known as the spring break capital of the country. The advisory said Americans should "exercise increased caution" because of widespread violent crimes such as homicides..