<p><b>A damaged car sits amid building rubble following a magnitude 7.4 <a href="http://environment.nationalgeographic.com/environment/natural-disasters/earthquake-profile.html" id="yu8." title="earthquake">earthquake</a> that rocked central <a href="http://maps.nationalgeographic.com/maps/map-machine#s=r&amp;c=-43.52352886550124,%20172.63818383216855&amp;z=7" id="bin1" title="Christchurch, New Zealand (see map)">Christchurch, New Zealand (see map)</a>, early Saturday, local time. </b></p><p>The New Zealand earthquake caused road damage and wall collapses in parts of the city of 400,000, and authorities said looters had broken into some damaged shops, according to the Associated Press.</p><p>No tsunami alert was issued and there were no reports of injuries, though many residents were in a panic following the 4:35 a.m. temblor, Christchurch resident Angela Morgan told the AP. (See <a href="http://environment.nationalgeographic.com/environment/photos/earthquake-general/" id="njpd" title="photos from past earthquakes.">photos from past earthquakes</a>.)</p><p>"Roads have subsided where water mains have broken and a lot of people evacuated in panic from seaside areas for fear of a tsunami," she said. "There is quite significant damage, really, with reports that some people were trapped in damaged houses."</p>