Khawla Zeitawi holds a photograph of her husband, Jasser Abu Omar, arrested two months ago by Israeli security forces. Zeitawi believes the Israelis may have acted on information relayed by the Palestinian Authority as part of the longstanding security coordination between the two governments. This month, high-ranked Palestinian Authority leaders have questioned security coordination with Israel -- although they depend on the practice to ensure Western support and contain the Islamist Hamas movement. McClatchy