Americans are being urged to delay unnecessary travel to parts of the Mexican states of Durango, Coahuila and Chihuahua because of drug violence. Three Americans with ties to the U.S. consulate were killed Sunday.

The warning comes at a popular time for travel to Mexico. Many QCA families make it their spring break destination. Now Quad Citians are calling and emailing local travel agencies asking whether they'll be safe in Mexico.

One email reads, "I heard on the news this morning they are having problems down in Mexico and some people were killed. What are they saying about travel down there?"

While the U.S. State Department is advising people to delay travel to parts of Mexico unless it's necessary, so far tour operators like Funjet Vacations and Apple Vacations say everything's a go.

"The Federal Aviation Administration, which regulates air travel, is going to have to step in and stop flights before they're going to stop everything. So until that happens they'll keep traveling," Nikki Stevenson, Manager at Gulliver's Travel explained.

Despite that, travel agents say it's a personal decision whether to make a trip in the wake of a warning and they're just there to guide you and offer advice.

"I'm not saying it's not scary. A lot of people just need to think about common sense. Don't go to place where you shouldn't go-- just like you would here," Stevenson said.

That's the advice Deb Marten is taking. She's headed to Mexico for the first time and while she's not too concerned, she might be making some changes while there.

"We were talking about going off the resort maybe twice. Now we might listen to the news before going off the resort," Marten said.