Earthquakes in north-central Japan collapse 5 homes that were damaged in deadly January quake - Earthquakes shake Japanese region, collapse 2 homes that were damaged in deadly January quake - A strong earthquake in Japan leaves 9 people with minor injuries - Strong quake in southwestern Japan leaves 9 with minor injuries, but no tsunami - Japan earthquake: Millions on high alert after 6.4 tremor leaves streets piled with rubble - Japan earthquake: Millions on alert as 6.3 magnitude quake rocks southern region - Earthquake jolts southern Japan's Ehime, Kochi prefectures - Japan earthquakes have killed 221 people and 24 remain missing