BBM. Just my own personal experience here, but the first degree murder charge could indicate some pretty heavy evidence. However, I don't know the state's policy on infant murder. In some states, all shaken baby/abusive head trauma deaths are automatically charged as first degree murder. Other states, like my own, consider premeditation. I did a quick google, but I haven't dug up anything that definitively points to the policy for Iowa.
If Iowa doesn't charge all SBS/ABT deaths as first degree murder, that's a huge implication of premeditation and very damning.
He is a juvenile who has not been arraigned. He has also been charged with child endangerment, which fits with first degree murder charge, Sect. 5.
707.2 MURDER IN THE FIRST DEGREE.
A person commits murder in the first degree when the person
commits murder under any of the following circumstances:
1. The person willfully, deliberately, and with premeditation
kills another person.
2. The person kills another person while participating in a
forcible felony.
3. The person kills another person while escaping or attempting
to escape from lawful custody.
4. The person intentionally kills a peace officer, correctional
officer, public employee, or hostage while the person is imprisoned
in a correctional institution under the jurisdiction of the Iowa
department of corrections, or in a city or county jail.
5. The person kills a child while committing child endangerment
under section 726.6, subsection 1, paragraph "b", or while
committing assault under section 708.1 upon the child, and the death
occurs under circumstances manifesting an extreme indifference to
human life.
6. The person kills another person while participating in an act
of terrorism as defined in section 708A.1.
Murder in the first degree is a class "A" felony.
For purposes of determining whether a person should register as a
sex offender pursuant to the provisions of chapter 692A, the fact
finder shall make a determination as provided in section 692A.126.
http://coolice.legis.iowa.gov/Cool-...ory=billinfo&service=IowaCode&ga=83&input=707