Baghdad (CNN) -- The head of a television station and a human rights activist were shot dead by gunmen who attacked their car with small arms fire Friday, Iraq's interior ministry said. Taha Hameed, the director of al-Massar TV, and Abed Farhan Thiyab, the director of Iraq's political prisoners association, were killed in southern Baghdad. Hameed was also a senior official with the governing Islamic Dawa Party - Iraq Organization. He was killed immediately when gunmen intercepted his car and fired on it, interior ministry officials said. Separately, two civilians were killed and four others were wounded when a roadside bomb exploded in a residential area in the northern outskirts of Baghdad on Thursday night.
Gunmen intercept a car and spray it with bullets, Interior Ministry officials say . One of the victims is Taha Hameed, the head of al-Massar TV and a political party official . The other is Abed Farhan Thiyab, the director of Iraq's political prisoners association .