Originally Published: 22 NOV 21 14:23 ET

Updated: 23 NOV 21 12:54 ET

By Ralph Ellis, Kay Jones and Holly Yan, CNN

(CNN) -- The man accused of careening his SUV into a Wisconsin parade, killing five people and injuring 48 others, was a registered sex offender in Nevada and had an active arrest warrant in that state, court records show.

He was also released on bond this month after allegedly running over a woman who said she's the mother of his child earlier this month, according to court documents.

Darrell E. Brooks, 39, of Milwaukee, is the lone suspect in Sunday's parade tragedy, Waukesha Police Chief Dan Thompson said.

Brooks may be charged with five counts of intentional homicide, and more charges are possible, Thompson said.

Some are wondering why Brooks was released on $1,000 bond after allegedly running over a woman on November 2 -- an amount the district attorney's office now calls "inappropriately low."

What allegedly happened November 2

Brooks is accused of running over the woman with his car while she was walking through a gas station parking lot, according to a criminal complaint.

The woman told authorities that she was the mother of his child, according to the criminal complaint.

"Officers observed tire tracks on her left pants leg," the criminal complaint read.

Prosecutors filed five charges related to the incident including: obstructing an officer; second-degree recklessly endangering safety with domestic abuse assessments; disorderly conduct with domestic abuse assessments; and misdemeanor battery with domestic abuse assessments.

Brooks was also charged with bail jumping because he was already out on bail following an incident from July 24, 2020, according to court documents.

The Milwaukee County district attorney's office now says it should not have recommended such a low bail for Brooks and have launched an internal review into the decision.

"The State's bail recommendation in this case was inappropriately low in light of the nature of the recent charges and the pending charges against Mr. Brooks," the office said in a statement.

"The bail recommendation in this case is not consistent with the approach of the Milwaukee County District Attorney's Office toward matters involving violent crime, nor was it consistent with the risk assessment of the defendant prior to setting of bail."

CNN reached out to Brooks' attorney from the 2020 and earlier November 2021 incident about the DA statement, but has not yet received a response.

The suspect is also a registered sex offender

Questions about why Brooks was released on $1,000 bond came as news emerged about his criminal record in Nevada.

Brooks pleaded guilty to statutory sexual seduction in November 2006, according to court and inmate records.

Additional details about the case were not immediately available. CNN has been unable to identify Brooks' lawyer for this case.

According to the inmate records, Brooks served his sentence in the Northern Nevada Correctional Center from March 2007 to September 2008.

The Nevada sex offender registry shows Brooks is a registered sex offender in that state.

Brooks also has an outstanding arrest warrant in Nevada in an unrelated case for which he was arrested and jumped bail, authorities said.

The warrant was issued on August 15, 2016, for jumping bail, said Sarah Johns, Washoe County Sheriff's Office spokesperson.

Johns said detectives later determined Brooks was in Wisconsin. "However, detectives did not have viable intelligence on Brooks' exact location."

CNN has reached out to a previous attorney for Brooks, but has not received a response.

Bail was reduced from $10,000 to $500 after another incident

In the 2020 incident, Brooks is accused of firing a handgun during an argument, according to a charging complaint.

While arresting Brooks, authorities say they found a stolen handgun and three "multi colored pills," which later tested "presumptively positive" for methamphetamines.

Brooks was charged with two counts of second-degree reckless endangering safety while using a dangerous weapon and one count of possession of a firearm by a felon.

Bail had initially been set at $10,000 in that case but because Brooks had asked for a speedy jury trial, which could not be met, bail was reduced to $500. Brooks was released on bail in that case on February 21, according to the district attorney's office.

What led up to the Waukesha tragedy

Brooks was involved in a domestic disturbance earlier Sunday and left that scene just prior to driving his SUV through the parade, the police chief said.

Officers tried to top Brooks as he approached the parade in his SUV, but Brooks allegedly drove through barricades.

"When the suspect was driving through and into the crowd, one officer did discharge his firearm and fire shots at the suspect to stop the threat but due to the amount of people, had to stop, stop and fire -- not fire any other additional shots," Thompson said.

Brooks was not injured.

The five deceased victims range in age from 52 to 81, and at least 18 children were hospitalized.