According to early reports, explosion and shooting were heard in Iran’s southeastern port Chabahar near the Pakistani border on Thursday morning.

According to security officials, the explosion was caused by a car bomb going off in front of the Police Headquarters in Chabahar, Sistan and Baluchestan province.

Casualties have been reported in the blast, with at least four killed and a number of pedestrians and shop owners injured. Later reports dismissed that the police chief of Chabahar was among the casualties.