Israel-Gaza live updates: Aerial 'infiltration' attack reported in northern Israel

Israeli and Jordanian authorities confirmed the partial reopening of border crossings on Monday following their closure due to the killing of three police officers at the Allenby Bridge.

An Israel Airport Authority spokesperson said the crossings at Yitzhak Rabin near Eilat, at the Jordan River near Beit Shean and at the Allenby Bridge would open for passenger traffic.

The media spokesman for the Jordanian Public Security Directorate said that King Hussein Bridge leading to the Allenby entry point would remain closed to freight traffic.

Meanwhile, Jordan's Interior Ministry said that its preliminary investigations into Sunday's shooting at the Allenby Bridge crossing confirmed that the alleged gunman was a Jordanian citizen named Maher Dhiyab Hussein Al-Jazi.

The alleged shooter -- whom Israeli security forces said they shot and killed -- was a resident of the Al-Husseiniyah area in Ma'an Governorate, and was crossing the bridge as a driver of a freight vehicle carrying commercial goods.

Al-Jazi acted alone, the ministry said, noting its investigation is ongoing. Authorities are attempting to organize the return of his body so he can be buried in Jordan.

-ABC News' Jordana Miller, Ghazi Balkiz and David Brennan

Strikes targeted a Syrian scientific research area in the city of Masyaf in the Hama countryside on Sunday night, Syrian state media and the Syrian Observatory for Human Rights (SOHR) said.

"Ambulance vehicles rushed towards the center of the area" amid reports of casualties, the SOHR -- a U.K.-based war monitor -- said on its website.

Both Syrian state media and the SOHR attributed the strikes to Israel. The SOHR said Syrian anti-aircraft weapons intercepted some Israeli missiles.

There was no immediate confirmation on the number of casualties. At least 14 people were killed and 43 others were wounded, Syrian state news agency SANA reported. ABC News was not able to immediately confirm the reported casualties or whether they were military personnel.

ABC News asked the Israel Defense Forces for comment. Israel typically does not confirm or deny responsibility for strikes in Syria, where it has been engaged in a "shadow war" with Iran and its allies -- including the Lebanese Hezbollah militia -- for several years.

-ABC News' Ghazi Balkiz and David Brennan

The polio vaccination campaign continued today in south Gaza, Khan Younis and Rafah, after early issues in the region when vaccines could not be properly distributed to the eastern side of Gaza.

The Palestinian Ministry of Health announced Sunday that 441,647 children in Gaza have received the first dose of the polio vaccine, so far.

This accounts for about 69% of the targeted population, according to the ministry.

According to the World Health Organization, 95% of children need to be vaccinated to prevent the spread of the disease effectively.

On Monday, vaccinations will be offered in northern Gaza where daily, eight-hour pauses in fighting and airstrikes will be instituted so children can be taken to one of the roughly 33 locations across Gaza City and north Gaza where the vaccine will be administered, according to the ministry.

-ABC News' Victoria Beaulé

Israel closed on Sunday the two land crossings between Jordan and Israel, as well as the Allenby Bridge crossing between Jordan and the occupied West Bank, the Israel Airports Authority -- which oversees the crossings -- told ABC News.

The closures followed a shooting on Sunday morning at Allenby that killed three police officers.

The gunman -- who was shot dead by security forces -- came from the Jordanian side, but it was not immediately clear if he was affiliated with any militant group. Both Hamas and the Islamic Jihad issued congratulatory statements about the shooting.

Netanyahu condemned the attack, saying it was attributable to the "murderous ideology led by Iran's 'Axis of Evil'."

Israel did not say how long the closures would last. The Allenby crossing is one of the key entries through which goods destined for Gaza pass.

-ABC News' Jordana Miller, Nasser Atta, Victoria Beaule and David Brennan