The article linked in #5 definitely reports witnesses (plural) said he shouted “Allahu Akbar” while shooting in the McDonalds.
The authorities do not seem able to grasp it yet, but CNN and the Daily Mail, at least, have reported it.
CNN players the eyewitness interview yesterday.They may never again given the new narrative. She said he targeted kids and yelled Allah Ackbar until he ran out of bullets. Then he walked out the front reloading.