According to Palestine.info, the Zionist regime army claimed in a statement that its troops fired at the youths as they were trying to cross the border.
Israeli public radio claimed the three penetrated 400 meters into occupied territories from central Gaza "under cover of stormy weather" before the troops shot them dead.
The Israeli army regularly guns down Palestinians in Gaza, accusing them of attempting to enter the occupied territories or carrying out attacks on its forces.
About 310 Palestinians have been killed by Israeli forces ever since the anti-occupation protests began in Gaza. More than 18,000 other Palestinians have also sustained injuries.