356.3  Minors separately confined.
  Any sheriff, city marshal, or chief of police, having in the officer’s care or custody any prisoner under the age of eighteen years, shall keep such prisoner separate and apart, and prevent communication by such prisoner with prisoners above that age, while such prisoners are not under the personal supervision of such officer, if suitable buildings or jails are provided for that purpose, unless such prisoner is likely to or does exercise an immoral influence over other minors with whom the prisoner may be imprisoned.
  A person under the age of eighteen years prosecuted under chapter 232 and not waived to criminal court shall be confined in a jail only under the conditions provided in chapter 232.
  Any officer having charge of prisoners who without just cause or excuse neglects or refuses to perform the duties imposed on the officer by this section may be suspended or removed from office therefor.
[C97, §5638; C24, 27, 31, 35, 39, §5499; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §356.3]