some bus lines on the american side are canceling service to mexico, but one operator on the mexican side says that they are not changing the routes for the time being. >> >> translator: we are taking measures to make sure that the passengers and the drivers are safe, but canceling routes is not part of our plans. >> and rafael joins us now. so, what is behind this? is this all about drugs or more to it? >> well, that is exactly right. it is all about drugs. you have two very powerful drug cartels, and they are fighting for the same territory. this is a route that has been used for many, many years as a transit point for mexican drugs, from mexican drug cartels to go into the united states. so there has been a battle going on there for a couple of years now, and that's what is behind those killings. now, some other elements of the organized crime are, have been attacking migrants coming from central america and from mexico,