An aftershock Thursday rattled the Central Asian republic of Tadzhikistan near villages where hundreds were killed this week by a quake-triggered mudslide. No damage or deaths were reported. The official Tass news agency said the tremor struck without incident at 2 a.m. about 15 miles southwest of the republic's capital of Dushanbe. The epicenter of Thursday's tremor was 18 miles southwest of Sharora, which was smothered by a mudslide following the quake early Monday that measured 5.4 on the Richter scale. The slide buried one-story mud-brick and prefabricated concrete homes in three remote mountain villages and killed 274 people, officials said.