The Mexican government sent in the Marines to storm the suburban compound where the drug lord was hiding out. Leaving his men to shoot it out with the troops, he grabbed an assault rifle and hoofed it through the sewers. He emerged some distance away, where he commandeered a vehicle. It didn’t do him any good, as he was captured soon after.
I’ve heard some reports that the tunnels where he played rat was a “drainage sewer”, but below is a picture that supposedly shows the gun Guzman abandoned when he popped out onto the street.
I can almost smell it from here!