Police said a Dubuque woman was arrested after her three children ingested marijuana gummies, became sick and were treated at hospitals. 22 year old Katelyn Brennan of Dubuque was arrested Sunday at her residence on a warrant charging three counts of child endangerment. The Dubuque Police Department and the Iowa Department of Health and Human Services began an investigation Dec. 15 after Brennan’s children, ages 1, 2 and 3, found a package of marijuana gummies in Brennan’s bedroom and ingested them. All three children “exhibited symptoms of marijuana intoxication. A report says two of the children suffered seizures.