A former doorman has been found guilty of brutally stabbing two Boston doctors to death in their penthouse just hours after he was thrown out of the court for threatening the prosecutor and his wife.

Bampumim Teixeira, 33, was convicted of first-degree murder Tuesday after stabbing Dr. Lina Bolanos, 38, from Colombia, and her fiance, British-born Dr. Richard Field, 49, to death in May 2017. Teixeira had briefly worked at the couple's luxury apartment building.

The engaged couple were said to have also had injuries consistent with being bound or cuffed.

Jurors began deliberating Monday before Teixeira was also convicted of home invasion, kidnapping, and armed robbery Tuesday. He will be sentenced Friday, The Boston Globe reports.

Teixeira had earlier warned Suffolk County assistant district attorney John Pappas: 'You better hope I never get out of jail. Your wife is getting f***ed.'

He was then dragged from the court by two guards as he continued his outburst Tuesday.

Bampumim Teixeira, 33, pictured, was convicted of first-degree murder Tuesday after stabbing Dr. Lina Bolanos and her fiance, Dr. Richard Field, to death in May 2017

Teixeira was found guilty Tuesday of killing doctors Lina Bolanos, left, 38, and Richard Field, right, 49, who were both fatally stabbed in their Boston penthouse in May 2017

SOUTH BOSTON DOUBLE MURDER TRIAL OUTBURST: The suspect appears to be upset about what ADA John Pappas said in his closing arguments on Monday and then this happened: pic.twitter.com/NSzroHludR — Robert Goulston (@rgoulston) December 10, 2019

Teixeira's threat happened before jurors were brought in and a judge told them he had forfeited his right to be in court.

Suffolk County District Attorney Rachael Rollins said a fresh investigation will now 'determine whether additional charges will be brought against Mr. Teixeira'.

She added: 'I will never stand idly by if the safety of my employees or our communities is threatened.'

Pappas had said Teixeira's claim that he was having an affair with Bolanos and then killed Field in self-defense is 'utterly absurd and ridiculous', WCVB reports.



Earlier in his trial, crime scene photos were released showing the words 'he killed my wife' scrawled on the wall of the murder scene, along with marks crossing out Field's face in several family photos. 'Payback' was also found scribbled on the walls.

Teixeira had earlier warned Suffolk County assistant district attorney John Pappas

As he was taken into custody at the scene, the suspect Teixeira muttered 'they killed my wife' and told Boston cops 'you guys are going to die,' as well as mentioning a 'sniper,' Boston police detective Sean Wallace testified.

It is unclear whether Teixeira, a native of West Africa and U.S. green card holder, had ever been married either in America or abroad.

Both Bolanos and Field were respected anesthesiologists, and Teixeira's only known connection to them was that he had formerly been briefly employed as a doorman in their luxury apartment building.

Field was born in Hammersmith, west London, UK, the Guardian reports.

He graduated from the University of Sheffield's medical school, in England, in 1999.

The North Shore Pain Management center, where Field had worked for the past decade paid tribute to the doctor.

'He was a valued member of the medical community and a tremendous advocate for his patients,' the clinic's website said. 'His tragic and sudden passing leaves an inescapable void in all of us.'

Bolanos was a paediatric anaesthetist at a Massachusetts eye and ear hospital and an instructor at the Harvard Medical School.

Hospital president John Fernandez told the Guardian: 'Dr Bolanos was an outstanding paediatric anaesthetist and a wonderful colleague in the prime of both her career and life.'

Prosecutors have said that the exact motive of the brutal slayings may remain forever mysterious, but have pointed out that a bag filled with jewelry was found at the scene, suggesting robbery as a motive.

Teixeira had previously been repeatedly convicted of bank robberies, but avoided deportation through plea deals with Massachusetts prosecutors.

Teixeira was then dragged from the court by two guards as he continued his outburst Tuesday

Doctors Lina Bolanos, 38, and Richard Field, 49, were found dead in May 2017. Teixeira - who briefly worked at the couple's luxury apartment building - has been found guilty of killing them

An evidence photo shows the message 'HE KILLED MY WIFE' scrawled on the wall of the penthouse where victims Lina Bolanos and Richard Field were found stabbed to death

The shocking double murder unfolded over the course of several hours on May 5, 2017.

Prosecutors say that a person wearing a bright yellow shirt and carrying a string-style backpack — like the items found with Teixeira at the murder scene — snuck into the apartment building through the garage shortly before 4pm.

Bolanos entered the building at about 5pm. Field arrived home from work at about 6.30pm — but remained alive through two hours of sick torture, as shown by his desperate attempts to dial 911 and text friends for help.

Bolanos also called 911 in her own desperate plea for help, and last week jurors heard audio of the operator hanging up on her muffled replies.

During the medical examiner's testimony, he said that Bolanos had sustained 24 incised and sharp-force stab wounds. Some of the stabs fatally severed her internal jugular vein.

Officers respond to the scene the night that the bodies of Field and Bolanos were found

The autopsy also showed that Bolanos had multiple blunt force injuries, including significant injuries to her face and head.

Field, meanwhile, received a single fatal stab wound to the neck that severed his carotid artery.

Both doctors were said to have had injuries consistent with being bound or cuffed.

The medical examiner said that he was unable to determine whether Bolanos or Field died first died first or what their times of death were. It was also unclear what kind of a knife was used during the stabbings.