The 21-year-old suspect in the July 4th Highland Park parade mass shooting was charged Tuesday with seven counts of first-degree murder.

Eric Rinehart, the Lake County, Illinois State Attorney told reporters that he will request a judge to hold Robert “Bobby” Crimo III while the investigation continues. If convicted, the suspect faces up to life in prison without parole.

“I want to emphasize that there will be more charges. We anticipate dozens of more charges centering around each of the victims, psychological victims, [and] physical victims,” Rinehart said.

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The update in the investigation came after a seventh victim died Tuesday from injuries sustained in Monday’s mass shooting.

Authorities believe the massacre had been planned for weeks, and they say more than 70 rounds were fired from the gunman’s high-powered rifle, which was similar to an AR-15.

The suspect, is accused of opening fire from a roof of a business, which he accessed from a fire escape ladder, police said.

Police said Crimo wore women’s clothing during the shooting to apparently allow him to hide his facial tattoos and blend in with the crowd to flee.

“Following the attack Crimo exited the roof, he dropped his rifle and he blended in with the crowd and he escaped,” police said Tuesday. “He walked to his mother’s home who lived in the area and he blended right in with everybody else.”

It appears Crimo bought the rifle legally in Illinois, police said.

Police said they are looking to talk to a witness who is believed to have seen Crimo drop the rifle behind a red blanket immediately after the shooting.

He bought five guns overall, including two rifles, over the last year or so, police said.

No motive is known, police said. When asked by reporters if the gunman targeted anyone specifically, police said the “shooting appears to be completely random.”

Crimo — who was apprehended Monday evening after an hours-long manhunt — is answering questions from investigators and has made statements taking responsibility for the attack, according to multiple law enforcement sources.

In 2019, a family member reported that Crimo said he was going to “kill everyone” at the home, police said Tuesday. Authorities confiscated knives, a dagger and a sword, police said.

There was no information that he possessed any guns at that time and there was no probable cause for arrest, police said.

Culled from ABC News.