MONDAY, April 15, 2019 -- Many older adults, including those who are mentally impaired, don't lock up their guns and ammo, University of Washington researchers report.

Almost 39% of the more than 4,400 seniors they surveyed in Washington state said they had a firearm in their home. Nearly a quarter said they keep at least one gun loaded and unlocked. Fewer than a third said they keep all firearms locked up and unloaded.