Mexico may have enjoyed a stroke of luck to go ahead against Korea DPR, but they were undeniably worthy of a 3-0 victory which took them on to three points from two games in Group F, and left their victims on one. An own-goal put Juan Carlos Chavez's team in front, a terrific Taufic Guarch strike doubled the lead and Diego de Buen competed the scoring with a last-gasp free-kick.
Mexico took just two minutes to give their opponents a warning, Ulises Davila's strike from the edge of the box going just centimetres wide of the post. Diego de Buen tried his luck from a similar position on 13 minutes, but Om Ji Song managed to flick it on to the crossbar.
Davila worked his magic on the half-hour mark, faking a shot and eluding the challenges of two opponents. However, the Guadalajara man's ensuing shot failed to vindicate his excellent build-up play.
Davila then turned provider, crossing for the unmarked Guarch, who directed his far-post header wide.
Mexico had produced some handsome football to create themselves chances, but it took a scrappy own-goal for them to break the deadlock. Davila lost control of possession and Jong Song Hyok attempted to hack the loose ball clear. He succeeded, however, firing it against team-mate Ri Yong Chol, and the ball drifted over the line to the North Koreans' despair.
Nine minutes after the restart, Mexico made it 2-0. Guarch unleashed a rocket from 20 yards and although Om got fingertips to it, he could not prevent it flying into the top corner.
Korea DPR opportunities were seldom, though Mun Hyok headed wide from a corner and Jong Il Gwan narrowly missed the target following neat work.
Mexico began to play the clock down with possession football thereafter, and after a Jong volley had gone over on 87 minutes, they extended their lead deep into injury time, with De Buen's free-kick adding gloss to the scoreline.
Mexico will now face England in Cartagena on Thursday, when Korea DPR will meet Argentina in Medellin.