The latest on the deadly flash flooding to hit the Utah-Arizona border region (all times local):

9:45 a.m.

Officials at Zion National Park in southern Utah are expected to speak to reporters Wednesday about four hikers found dead and three still missing after heavy rains sent flash floods coursing through a narrow slot canyon.

Authorities say the group of seven people from California and Nevada in their 40s and 50s set out to hike the small Keyhole Canyon on Monday, before park officials closed slot canyons due to flooding that evening.

The bodies of three men and one woman were found Tuesday, though continued danger of flash floods prevented crews from immediately recovering them.

The deaths came after 12 people died when fast-moving floodwaters on Monday swept away two vehicles on the Utah-Arizona border, about 20 miles south of the park.

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7 a.m.

Authorities are searching for four people still missing after flash flooding killed 12 people in a Utah-Arizona border community and four others in nearby Zion National Park.

The flooding hit Monday evening and washed away a van and SUV carrying three women and 13 children in a small, polygamous town on the Utah-Arizona border.

Three people survived, 12 were confirmed dead and crews are searching for the 16th person.

Some 20 miles to the north at Zion National Park, the same storm system sent flash floods coursing through a narrow slot canyon, killing four people and leaving three others missing.