FORT LAUDERDALE, Fla. >> Already heightened security will be bolstered Thursday at the Florida high school where last month’s massacre occurred as Gov. Rick Scott ordered eight highway patrol troopers to assist with securing the grounds. That step came after the suspect’s brother was arrested there, two students were caught carrying knives and another made online threats.

The troopers will be stationed at Marjory Stoneman Douglas High School indefinitely along with Broward County deputies, leaving an armed guard at every campus entrance point, Scott said in a statement. Before the shooting, the school was patrolled by one armed deputy and unarmed guards. An unspecified number of deputies, some armed with rifles, were added after the school reopened.

“Parents, students and teachers have recently endured one of the worst tragedies in Florida history,” Scott said. “They must be assured that every necessary step is being taken to increase safety and ensure no unauthorized people are allowed on campus.”

The strengthened security comes three days after suspect Nikolas Cruz’s younger brother, Zachary Cruz, was arrested on trespassing charges. Deputies said he was found Monday riding his skateboard on campus after dismissal after being told to stay away.

Zachary Cruz, 18, is being held on $500,000 bond and Broward County Judge Kim Theresa Mollica has approved a search of his home for weapons. The Broward Sheriff’s Office wants him barred from possessing firearms and also involuntarily hospitalized for a mental health evaluation under a state law passed after the Feb. 14 shooting spree that killed 17.

Zachary and Nikolas, 19, both attended Stoneman Douglas. They shared the same biological mother but had different fathers. Both were adopted at very young ages by Roger and Lynda Cruz, who moved them into their Parkland home. Lynda Cruz died in November and their father died some years earlier.

In a separate case, Mollica imposed a $12,500 bail today on a Stoneman Douglas student who officials say pulled a small knife on a boy who she says was harassing her and a friend.

The SunSentinel reports that Salter attorney Brian Reidy called the high bond “out of control” and “ridiculous” at a hearing and blamed it on fear from last month’s rampage.

“I don’t know when we all hit the fear button when everything is such an absolute emergency,” Reidy told the judge.

Meanwhile, Florida residents won’t get a chance to vote this fall on adding gun control restrictions to the state constitution. A state panel today rejected several proposed restrictions on procedural grounds. A majority of the Florida Constitution Revision Commission voted that the gun control measures were out of order and couldn’t be considered under commission rules. The commission is allowed to propose changes to the state constitution.

Elsewhere, several media organizations including The Associated Press asked a judge to determine if additional surveillance video from the school shooting should be released. Last week, the Broward Sheriff’s Office released a 27-minute video depicting ex-deputy Scot Peterson’s actions remaining outside the building where the shooting took place.

Nickolas Cruz’s attorney has said he will plead guilty to 17 counts of murder and 17 counts of attempted murder if prosecutors will waive the death penalty, which they have refused to do.