REX Heuermann, the Long Island Serial Killer suspect, displayed violent behavior, a witness has claimed.

Heuermann was arrested in July after being linked to the deaths of three women whose remains were found near Gilgo Beach.

In connection to those women, Heuermann has pleaded not guilty to three counts of first-degree murder and three counts of second-degree murder.

But new evidence has emerged linking Heuermann to two other victims, Shannan Gilbert and Karen Vergata.

Heuermann has not faced charges in connection to those two women.

In a press conference held on Wednesday, attorney John Ray – who is representing victims in the case – appeared alongside Suffolk County Police Commissioner Rodney Harrison to present the new evidence.

A witness has come forward and given an official sworn statement claiming that she was a taxi driver on Long Island in 2009 and encountered both Heuermann and Gilbert.

In one instance, the witness claimed that she was dispatched to a bar in Ronkonkoma to pick up a man she now believes to be Heuermann.

She immediately noticed that he was “extraordinarily large” and “seemed arrogant,” according to an affidavit obtained by The U.S. Sun.

The witness said that after the man entered the cab, he told her they were “going for a long ride in the woods,” according to the affidavit.

But when the witness said she couldn’t take the man on that trip without clearing it with her dispatcher, he grew violent, she claimed.

“As we argued, he said to me that he wanted to kill me if I would just give him a reason to do so,” the affidavit stated.

The witness claimed that she heard the man “click a gun.”

The man eventually got out of the car and shot the gun twice into the woods, according to the affidavit.

1990S ENCOUNTER

In addition to the aforementioned witness, one other gave an official sworn statement.

That person, a self-described “former swinger,” claimed that Heuermann’s wife, Asa Ellerup, knew about his visits from other sexual partners.

Ellerup was also home for some of the visits, the witness claimed in an affidavit.

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The witness claimed to have encountered Heuermann and his wife at their Massapequa Park home in the 1990s, according to the affidavit.

She also claimed to have picked up Vergata and brought her to the home.

Inside the home, Heuermann and Vergata disappeared downstairs while the witness stayed upstairs with Ellerup.

Ellerup shared that Heuermann “brought her from her country, and that everything she had, he has given to her,” the witness stated in the affidavit.

“She said that she was lucky that he was rich. She said she was also afraid of Rex.”

But Ellerup has consistently and vehemently denied having any knowledge of the crimes that Heuermann has been charged with.

Two others have spoken to Ray but have yet to make an official statement.

‘NOT DONE WITH THIS INVESTIGATION’

Harrison confirmed that all new leads will be investigated.

“We are not done with this investigation,” Harrison said.

“We have the information, we’re working it, and we’ll see where it leads up down the road.

“We have a job here as law enforcement, as the Suffolk County Police Department, to make sure we investigate every single complaint or interest in this case.”

Harrison also said that officials will “make sure that we look under every single stone to see if there is any connection to Rex Heuermann, or if there is a connection to somebody else that may be involved with the bodies that were discovered on Ocean Parkway.”

The U.S. Sun has reached out to the Suffolk County Police Department and the Suffolk County District Attorney for further comment.

Meanwhile, Heuermann remains at Suffolk County Jail without bail.

He is due back in court on November 15.