"It's an Israeli raid", said Rami Abdel Rahman, who heads the war monitor.
The Israeli attack was carried out from inside the Lebanese airspace, said the state TV, adding that the air defenses have intercepted a number of missiles, some of which were intercepted while over Lebanon.
The reported attack near Damascus is the first since US President Donald Trump announced last week that the US would withdraw all of its 2,000 forces in Syria, a move that would leave control of the oil-rich eastern third of Syria up for grabs.
"The aggression is still ongoing", said a presenter on state TV, which interrupted its programmes to air patriotic songs.
Loud explosions have been heard close to Syria's capital Damascus overnight, in what the Syrian military says were Israeli air strikes on a weapons depot.
"An IDF aerial defence system activated in response to an anti-aircraft missile launched from Syria", the official Israeli army Twitter account later said. The source cited information that came directly from senior Israeli military officers with direct knowledge of the attack.
The latest air strike on Syria was performed by Israel on November 29.
Russian Federation blamed the Israeli military for that incident - a charge rejected by Jerusalem - and has supplied Syria with the advanced S-300 air defense system.
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It looks like Christmas will be over and done with before the federal government will have a chance to get fully back to business. Byungsuk Ko / EyeEm via Getty Images The Statue of Liberty will remain open after an emergency injection of state funds.
Liverpool - Premier League - 21 December 2018
The players will train on Christmas Day before travelling down to London ahead of their game against lowly Fulham on Boxing Day. We won here and that is a big step for us. "I think today there were a couple moments when they were risky , but we did well".
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When asked for his take, Cohen said it sure "seems like" Trump is afraid, because "that's what he does" in these situations. Prosecutors confirmed last week in a filing that they believed the president ordered the payments to protect his campaign.
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The 23-year-old forward signed a two-year deal in free agency, but has struggled to find his niche with his hometown team. A buyout of Parker is a faint and unlikely possibility for the Bulls, but other teams can assume he's on the trade block.
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But Democrats - and some Republicans - are refusing to budge saying border security can be achieved without a wall. However, it's unclear if the new stop-gap spending bill will be able to actually pass through the House and Senate.