There are new developments in Idaho college murder case as defense attorneys challenge key evidence they say was improperly obtained by police, including search warrants and DNA.

New filings from Bryan Kohberger’s defense team describe a chaotic night when the former Ph.D. student was arrested at his parent’s home in the Pennsylvania Poconos.

His lawyers say that during the raid, law enforcement officers broke down the home’s front door, smashed the sliding glass door to the basement and held the entire family at gunpoint. They also claim that while Kohberger was “handcuffed and surrounded by police at gunpoint,” he “made statements to his arresting officers,” despite “not to read the rights”.

RELATED: The numerous pretrial hearings in the Idaho quadruple murder case against Bryan Kohberger

Now they want those statements thrown out, along with other key evidence, which lead defense attorney Anne Taylor claims were “unlawfully obtained by law enforcement using his genetic information.”

Authorities are linking Kohberger to the murder after they say they found DNA that was a “statistical match” on the ignition switch of a knife sheath at the crime scene where Xana Kernolde, Kaylee Goncalves, Madison Mogen and Ethan Chapin were found stabbed to death.

“When law enforcement uses that positive match and then says, well, we have to go get a search warrant because we have a positive match for Bryan Kohberger, that the DNA evidence is flawed and anything that comes from it is fruit of a poisonous tree. ABC News contributor Brian Buckmire said.

The defense, which says Kohberger is innocent, argues that without that genetic information, there could have been no request for his phone records that prosecutors say implicate him.

Taylor also disputes the way authorities gathered search warrants, specifically the search of Kohberger’s car, a white Hyundai Elantra, as well as his Apple and Amazon accounts.

Taylor says the warrants lacked probable cause.

The trial is set for August and we are still awaiting the judge’s decision on the the defense’s request to take the death penalty off the table.