An estimated 1,100 people remained stranded in eight municipalities in Iwate Prefecture and 17 were still missing late Thursday, two days after Typhoon Lionrock struck the region, killing 11.

Police and Self-Defense Forces were rushing to rescue residents in the town of Iwaizumi, where the missing 17 lived. The town saw 10 people killed by flooding, including nine at a nursing home, when the storm hit on Tuesday.

According to the town, most of the 17 people are elderly residents whose homes were inundated with floodwaters and whose access to roads was cut off, hampering efforts by municipal officials and welfare workers to confirm their safety.