It said seven officers were seriously wounded.
SYRIAN GOVERNMENT FORCES BEHIND 2018 DOUMA CHEMICAL ATTACK, WATCHDOG GROUP SAYS
Such attacks are not uncommon in Syria, where a nearly 12-year-old conflict has killed hundreds of thousands and displaced half the country’s pre-war population of 23 million.
A bus carrying Syrian police to the country's capital of Damascus was the target of a roadside bombing. The attack wounded 15 officers onboard the bus. (AP Photo)
In October, a bus bombing killed 18 Syrian soldiers in a Damascus suburb and wounded at least 27 others.
'ISIS BEATLE' ALEXANDA KOTEY DISAPPEARS FROM US PRISON SYSTEM RECORDS
Similar attacks over the years have killed and wounded dozens of soldiers in government-held parts of the war-torn country. In March last year, militants attacked a military bus near the historic town of Palmyra in central Syria, killing 13 troops and wounding 18 others.
Syrian authorities usually blame members of the Islamic State group who have been active in southern and central Syria, despite their formal defeat in Syria in 2019.
The leader of IS, Abu al-Hassan al-Hashimi al-Qurayshi, was killed in battle with Syrian opposition fighters in Daraa province in mid-October.