GAZA - An Egyptian military helicopter briefly crossed into Israeli-controlled airspace over the Gaza Strip on Friday, in a possible sign of increased security jitters a week after Egypt's army toppled President Mohamed Morsi.
Security sources in Egypt and Israel both described the flyover as a navigational error, but it came shortly after militants killed an Egyptian policeman and wounded a second in an attack on a checkpoint in the lawless Sinai peninsula across the border from the Palestinian Gaza Strip.
"The helicopter mistakenly crossed into Gazan airspace and immediately returned to Egypt," the Israeli security source said. Witnesses in Gaza said it stayed on their side of the border for about 10 minutes before returning.
The militant Palestinian group Hamas, which governs the Gaza Strip, declined comment on the helicopter incident. Hamas denies Egyptian accusations that it has an armed presence in Sinai.