The British-based Syrian Observatory for Human Rights said that seven Syrian officers were killed in the strikes, including a colonel.
US President Donald Trump ordered a massive military strike on a Syrian air base on Thursday in retaliation for a "barbaric" chemical attack he blamed on President Bashar al-Assad.
A Syrian official says a USA missile strike on an air base in the country's center has killed seven people.
The U.S. said it launched 59 Tomahawk cruise missiles at Syria overnight from two U.S. Navy warships in the eastern Mediterranean in response to what it claims was a chemical weapon attack that killed more than 100 people earlier this week.
In Wellingon, reports Dr Vernon Small of Fairfax Media, New Zealand Prime Minister Bill English backed the U.S. military action with "understanding", providing it was "proportionate".
Things that have happened while we've waited for April to give birth
She was very "with it" but then became very distracted and as Corey put it, "would have walked right through me". April's vet says all the clinical signs that the giraffe would give birth at any time remained Sunday night.
Syrian rebels welcomed a USA missile attack on a Syrian army airbase on Friday but said Washington's "responsibility" did not end there and military action should continue to prevent the Syrian government using airbases and banned weapons.
Talal Barazi, the governor of the province of Homs where the base is based, says the Friday dawn attack has also wounded nine.
The first direct USA attack on the Syrian government is retaliation for this week's chemical bomb attack on civilians.
The US strikes obliterated substantial portions of Syria's military capacity there.
President Assad denied using sarin gas while "Russia's Defense Ministry", according to the The Guardian newspaper in the United Kingsdom, has stated that the chemicals were released when a Syrian aircraft bombed a "rebel" arm storage facility.