A vehicle exploded at a police station in the north of the Syrian capital Damascus on Wednesday, killing a police officer and wounding others, the Syrian interior ministry said.
A "lieutenant colonel ... of the Damascus police ... was martyred after a vehicle exploded in the Barzeh police station," the ministry said on its Telegram messaging app channel.
Earlier in the day, the ministry had said the explosion wounded an officer and four other policemen.
"Investigations are ongoing to discover the circumstances of the incident," it added in the earlier statement, posting images of a mangled, burnt-out vehicle.
Security incidents, including blasts targeting military or civilian vehicles, occur intermittently in Damascus.
Sometimes they are part of personal disputes or score-settling in the war-torn country, where the security situation is tenuous, according to the Syrian Observatory for Human Rights, a war monitor.
Last month, state media said a car bombing rocked another Damascus district, with the interior ministry saying two people were slightly injured.
The April 2 car bombing took place in the Mazzeh area, which is home to the United Nations headquarters, several embassies and restaurants.
It was not immediately clear who was responsible for the attack or who the target was.
The conflict in Syria has killed more than 500,000 people, displaced millions and battered the country's infrastructure and industry.
While the front lines have mostly quietened in recent years, large parts of the country's north continue to resist government control.