June 14 (Reuters) - Following are security developments in the Gaza Strip and West Bank, as of 2300 GMT on Thursday:

Asterisk denotes new developments.

GAZA - Hamas's armed wing said its fighters "executed" leading Fatah militant Samih al-Madhoun, who had topped their wanted list of figures loyal to Western-backed President Mahmoud Abbas. Witnesses saw his body paraded in the street.

*GAZA - A Fatah official said one of Madhoun's bodyguards, captured at the same time, was later also shot dead and his body dumped in a street.

NABLUS, West Bank - The al-Aqsa Martyrs Brigade, the Fatah armed wing to which Madhoun belonged, said it killed Anis Salous, 30, a Hamas member in the West Bank city of Nablus in reprisal for Madhoun's death. Medical staff said Salous was shot twice, in the head and chest.

RAFAH, Gaza Strip - Four young Palestinians were killed in a blast in the town along the border with Egypt. The Israeli army denied reports they were killed by an Israeli tank shell.

GAZA CITY - At least 30 people were killed, mostly Fatah fighters, as Hamas militants captured the final bastions of forces loyal to Abbas, hospital officials said.

RAFAH, Gaza Strip - Two Hamas militants were killed in clashes near the Egyptian border as Hamas captured the security headquarters of the Fatah-dominated Preventive Security.

NABLUS, West Bank - Fatah gunmen ransacked the offices of Hamas politicians, throwing computers and equipment out the windows and setting some rooms on fire.

NABLUS, West Bank - Four Hamas militants surrendered peacefully to Fatah police after an hour-long siege. The four militants were shooting at random round the city and were chased by police to the building, witnesses said.

GAZA CITY - Hamas said it would refuse to accept an international force along the Gaza-Egypt border and would treat it as an occupying power. Israel has said an international force along the Gaza-Egypt frontier, where Palestinian militants have built weapons-smuggling tunnels, should be seriously considered to help counter Hamas's growing strength.

QALQILYA, West Bank - Israeli troops killed a Palestinian gunman, a member of the Fatah-affiliated al-Aqsa Martyrs Brigades, in the central West Bank town, local residents said.

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