RAMALLAH, West Bank (AP) -- Israeli forces arrested the speaker of the Palestinian parliament at his house in the West Bank early Sunday, and pressed their month-long offensive in Gaza against Hamas.

About 20 Israeli army vehicles surrounded the house of parliament speaker Abdel Aziz Duaik, a member of Hamas, and took him into custody, the director of the speaker's office and security officers said.

The Israeli military said that as a Hamas leader, he was a target for arrest.

On June 29, Israeli forces in the West Bank rounded up dozens of Hamas officials, including eight Cabinet ministers. One was released earlier this week.

Palestinian Prime Minister Ismail Haniyeh of Hamas called the arrest "another crime of piracy by the (Israeli) occupation against the elected representatives of our people" and called for international parliamentary action to win release for him and the other arrested officials.

The roundup was part of Israel's campaign against Hamas since a June 25 cross-border raid in which Hamas-linked militants killed two Israeli soldiers and captured another. The militant Islamic group said Saturday it would not allow Red Cross officials to visit the captured soldier.

Israel has demanded the release of the soldier and an end to the firing of homemade rockets at Israel by Gaza militants.

Early Sunday, a teenager was killed and three adults seriously wounded in an Israeli airstrike at the eastern edge of the town of Rafah on the Gaza-Egypt border, hospital officials said.

Seventeen Palestinians have been killed since Israeli troops and tanks moved back into southern Gaza three days ago.

On Saturday airstrikes killed six Palestinians and tanks rolled to the edge of Rafah, officials said.

At least two militants were among the dead, but one airstrike killed a 16-year-old girl, Kifah Natour, and her brother, Amar, 15, according to Dr. Ali Musa, the director of the local hospital. Their mother, Huda, 50, later died of her wounds. Four other people, including the siblings' 13-year-old brother, were seriously wounded when the missile hit.

Musa said the family was trying to flee their home as Israeli tanks advanced. The army said it had targeted groups of militants.

The Red Cross requested last week to visit Israeli Cpl. Gilad Shalit, the Israeli soldier being held by Hamas-linked militants. A Red Cross official said the request was made in a meeting with Palestinian factions in Gaza, but was denied without explanation.