The documents, which are part of Cruz’s criminal case in the shooting, show that he had written the word “kill” in a notebook, told a classmate that he wanted to buy a gun and use it, and had cut his arm supposedly in anger because he had broken up with a girlfriend. He also told another student he had drunk gasoline and was throwing up. Calls had even been made to the FBI about the possibility of Cruz using a gun at school.

The documents were provided by a psychological assessment service initiated by Cruz’s mother called Henderson Behavioral Health. The documents show a high school resource officer who was also a sheriff’s deputy and two school counselors recommended in September 2016 that Cruz be committed for mental evaluation under Florida’s Baker Act. That law allows for involuntary commitment for mental health examination for at least three days.

Such an involuntary commitment would also have been a high obstacle if not a complete barrier to legally obtaining a firearm, such as the AR-15 rifle used in the Stoneman Douglas massacre on Feb. 14, authorities say.