Unidentified gunmen assassinated Syrian parliament member Waris al-Yunis in the central province of Hama, a parliamentary source told AFP on Wednesday.
"An armed group opened fire on MP Waris al-Yunis's car as it travelled on the Hama-Salamiyah road at around 9:00 pm (1800 GMT) on Tuesday evening, killing him instantly," the source told AFP.
Yunis was a representative from the coastal province of Tartus, a stronghold of support for President Bashar al-Assad, and a bastion of the Alawite minority sect to which the embattled leader belongs.
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Rami Abdel Rahman, director of the Syrian Observatory for Human Rights monitoring group, said Yunis was a commander in the pro-regime National Defence Force militia.
The militia is fighting alongside government troops against rebels in various parts of Syria, including Hama province.
Yunis is one of a number of members of Syria's parliament killed in the country's bloody conflict, which began in March 2011 with anti-government protests and has spiralled into a civil war.
More than 180,000 people have been killed since the uprising began, according to the Observatory.