http://www.airpower.maxwell.af.mil/airchronicles/aureview/1970/mar-apr/mallin.html (http://www.airpower.maxwell.af.mil/airchronicles/aureview/1970/mar-apr/mallin.html)
"A few days before the break, Salvador won a playoff match 3-2, the winning point being made on overtime. The match was prudently played in Mexico City.
On 3 July, a small Honduran plane made an incursion into Salvadoran territory near the town of El Poy. On 14 July, during the morning hours, a second incursion occurred in the same area, this time by three fighter aircraft. They may have made strafing runs."