ABC News March 7, 2018

Nikolas Cruz indicted on 34 counts in Florida school shooting

WATCH: School shooting suspect formally indicted on 34 counts

A grand jury has indicted Nikolas Cruz on 34 counts related to last month's mass shooting at a South Florida high school.

Cruz, 19, allegedly opened fire at Marjory Stoneman Douglas High School in Parkland on Feb. 14, killing 17 people and injuring others. On Wednesday, the Broward County state attorney's office announced the indictment charging Cruz with 17 counts of first-degree premeditated murder as well as 17 counts of first-degree attempted murder.

The case will be prosecuted by Michael Satz, the state attorney for Florida's 17th judicial circuit, which covers Broward County.

Cruz is being kept in a single cell away from others at Broward County Jail, according to documents released by the jail.

In one of the jail reports, it was noted that Cruz was lying on his back and staring at the ceiling. It was also noted that for a few days, Cruz seemed restless and tossed and turned while in bed.

A Feb. 23 report stated that Cruz avoids eye contact and looks downward with a blank stare. He also refuses to come out of his cell for recreational time, according to the report.

The observation documents are dated from Feb. 18 to Feb. 24.

Cruz has been visited in jail by his brother on Feb. 22 and a friend of his late mother on Feb. 24, according to Cruz's visitation log.

The only other people who had visited Cruz between Feb. 16 and March 3 are his public defender, an attorney, a psychiatrist and an investigator, according to the log.