UH student Jade McKissic's cause of death in bayou is 'undetermined,' Houston medical examiner says

McKissic is now one of nine people whose death in a Houston bayou has an "undetermined" cause of death this year.

Why do so many Houston bayou deaths have an 'undetermined' cause? We asked an expert.

Cause of death remains unknown for at least 17 bodies that were recovered from the bayous between March and October.