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ST. LOUIS, MO (KTVI) - In a gripping testimony on Capitol Hill, Julie Nordman of Wentzville, told lawmakers Wednesday morning the terrifying details of how she hid in her attic, as her husband, Randy Nordman was murdered by a Mexican immigrant in the U.S. illegally.

The crime happened in the couple’s driveway at their home in New Florence on Mar. 7, 2016.

“He called out for me, Julie, Julie, I looked out the window and saw a man and my husband fighting over a riffle,” she said, “I asked if I could go check on my husband and they told me no and then I heard a pop.”

In her testimony, Nordman blamed the immigration system for her husband’s murder.

“After this man was arrested on numerous occasions for violent crimes, he went on to kill five completely innocent men,” Nordman went on to say, “not only has ICE failed us but our borders have failed us. They are obviously wide opened as the man was able to enter not once but twice without being detected.”

After Nordman’s emotional testimony, U.S. Senator. Claire McCaskill (D-MO) then blasted U.S. Department of Homeland Security Immigration and Customs Enforcement (ICE).

“Was it caused by a failure in our immigration laws and policies or was it instead the result of human beings failing to follow the rules or the policies or the directives,” said McCaskill, “unfortunately Immigrations and Customs Enforcement or ICE are the only people capable of answering that question. Mrs. Nordman, despite the resistance from ICE, I am going to do everything in my power to get you some answers.”

Nordman closed her testimony with a thank you to the law enforcement agencies who assisted with the arrest.

“I would like to publicly thank the Missouri Highway Patrol and the nearby county officers for caching and arresting this monster,” she said tearfully.

In a phone interview, Sgt. Shawn Griggs who was involved in the investigation, acknowledged Normand’s remarks.

“That means a lot to us," Griggs said, "our investigators spent a lot of time with Mrs. Nordman and I think that’s also what the people of Missouri expect. They expect state troopers and investigators of the drug and crime division to come to work and put in long hours to find out the truth about what happened.”

Following the murder, FOX 2 learned and reported in a Mar. 10 post last year, that accused mass murder Pablo Serrano-Vitorino should not have been in the United States.

Serrano-Vitorino, 40, allegedly shot five men to death – four in Kansas and one in Missouri, authorities said.

According to ICE:

In March of 2003, Serrano-Vitorino was convicted of making a terrorist threat in Los Angeles. After serving his federal time, he was deported in April 2004.

It’s unknown when he illegally re-entered the U.S. or how he ended up living in Kansas.

In November 2014, he was convicted of DUI. Federal immigration authorities have no record of being notified.

In June, he was arrested for domestic assault but released before immigration authorities responded to an inquiry about his legal status.

In September 2015, he was cited for driving without a license in Kansas. He was fingerprinted.

There was a “hit” when the fingerprint ran through the ICE system. Immigration authorities wanted him detained but sent notice to the wrong place: a sheriff’s department where Serrano-Vitorino had never been taken. He was again released.

Six months later, Randy Nordman of New Florence shot dead in his own home and a manhunt ensued for someone already suspected of murdering four men in Kansas; someone who seemed to repeatedly make it easy for authorities to figure out he wasn’t allowed in this country.

The then Missouri Governor, Jay Nixon called on Congress to pass immigration reforms and strengthen federal laws to prevent this.