JERUSALEM, APRIL 15 A Palestinian gunman infiltrated the Israeli-occupied Golan Heights from Syria and fired on Israeli troops on Friday in a rare flare-up on the normally quiet border that the Jewish state blamed on Damascus.

The Army said it captured the lone attacker, a 21-year-old militant belonging to Fatah, the Palestinians’ ruling faction, and that he told interrogators he had planned to abduct an Israeli soldier and take him back to Syria. No casualties were reported.

Israel, which recently has accused Syria of trying to disrupt an Israeli-Palestinian truce, called the incident a ‘‘grave violation’’ of UN-brokered security arrangements set up in the area after the 1973 Middle East war.

‘‘The Syrians should not be allowing armed terrorists to cross the border,’’ an Israeli Foreign Ministry spokesman said. ‘‘We demand... that the agreement be strictly upheld.’’

There was no immediate comment from Syria, which for decades has sought to recover the Golan Heights captured by Israel in the 1967 Middle East war.

Israeli officials have voiced suspicions that Syria wants to undermine Israeli-Palestinian peace moves to deflect international attention from a US-led campaign to speed up the withdrawal of Syrian forces from neighbouring Lebanon.

The gunman, who came from a Palestinian refugee camp in Syria, penetrated a border fence armed with a shotgun and fired into an Israeli Army post in an attempt to blow up petrol tanks, Israeli officials said. He was surrounded and captured after running out of ammunition.

Israel’s Army Radio said the man told interrogators he had wanted to avenge the deaths of his parents during one of Israel’s military offensives in Lebanon in the 1980s.

Israel carried out an air raid deep inside Syria in 2003 against a suspected Palestinian militant training camp following a suicide bombing at a Haifa restaurant that killed 23 people.