Shamma, an engineer for the pro-government, private Syrian television station Al-Ikhbariya, was killed with his colleague, Sami Abu Amin, when armed men attacked the station's offices in the town of Doursha, south of Damascus, in the early hours of the morning, according to news reports.
A video released by Al-Ikhbariya stated that Shamma had been working the night shift with Abu Amin when the attack occurred.
A total of three employees and four security guards were killed in the attack, according to SANA, the official Syrian news agency. Al-Ikhbariya and other pro-government stations provided footage of the attack's aftermath, showing piles of debris and destroyed equipment. The gunmen had ransacked the offices and planted explosives, the station reported.
Pro-government news outlets blamed the attack on armed terrorist groups.