Israeli troops backed by aircraft and tanks have clashed with Palestinian fighters in Rafah in the southern Gaza Strip, killing one man and wounding nine others, medical sources have said.

The man, a member of the Hamas movement, was killed when Israeli troops, supported by helicopter fire, moved into the sector.

The Israeli military said the operation on Sunday targeted armed groups who regularly fire rockets and mortars at southern Israel.

It confirmed air raids but had no further details.

"The army is operating in the south of the Gaza Strip against the infrastructures of terrorist organisations... We attacked armed men," an Israeli military spokesman said.

Israeli offensive

Hamas said the battles began around 1am after Israeli undercover units infiltrated houses east of the town of Rafah.

Tanks and bulldozers moved across the Israeli border into Gaza to back the troops, and Israeli aircraft struck twice, Hamas said.

The bulldozers were razing farmlands in an effort to deny rocket squads cover, and the army was carrying out arrest sweeps of men under 45, Hamas security and residents said.

According to Hamas, at least 25 men were arrested.

Moaiya Hassanain of the Gaza health ministry said nine men from the Hamas and Islamic Jihad groups were wounded by Israeli army fire and in the air raids.

Separately, a Hamas member wounded during an Israeli operation in Khan Younis three days ago, died of his wounds, the group announced.

PHOTO CAPTION

Israeli forces arrest pastinians during an operation in Gaza.

Al-Jazeera