The shooter, 30-year-old Bampumim Teixeira, 30, missed the officers before they pumped multiple bullets into him, leaving him wounded but very much alive.
One of two doctors found dead and bound inside their luxury penthouse in Boston had texted a friend that there was "a gunman in the house", prosecutors have said as the suspect was arraigned from his hospital bed.
The Suffolk County District Attorney's Office said that "inside the apartment, investigators found a black backpack full of jewelry, as well as a replica firearm and at least one knife".
The Boston Police Department said the suspect "immediately began firing" after encountering the officers at around 8:38 p.m. Police shot him in the hand, leg and abdomen, according to The Globe.
"The officers provided first aid to Teixeira outside the apartment, where he allegedly stated that another person would open fire on the officers if they went back inside".
Suffolk Country Assistant District Attorney John Pappas said during the arraignment in Teixeira's private room at Tufts Medical Center in Boston that he somehow gained access to the couple's $1.9 million apartment.
Bolanos and Field, both well-respected anesthesiologists, were engaged to be married.
Mr Teixeira had recently been released from jail after serving a sentence for attempting to hold up banks on two occasions, according to prosecutors.
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Israeli Prime Minister Benjamin Netanyahu attends the weekly cabinet meeting at his office in Jerusalem on May 14, 2017. The now-confirmed new ambassador to Israel, David Friedman, is due to take up his duties from Monday.
MA prosecutors requested the suspect be held without bail due to his past criminal history, which Teixeira's defence attorney did not oppose. He has not yet entered a plea. Prior to his work there, Field was an anesthesiologist and pain management specialist at Beverly Hospital and Brigham and Women's Hospital.
Dr Field, 49, was also an anaesthesiologist and worked at North Shore Pain Management.
Authorities have suggested that robbery was the motive behind killing the doctors who had planned to marry later this year before being found tied up and with "obvious trauma".
Field was instrumental in founding North Shore Pain Management, according to a statement from the staff there.
Colleagues of Bolanos, who worked as a pediatric anesthesiologist at Massachusetts Eye and Ear Infirmary in Boston, described her as compassionate, caring and an integral part of the team, the Boston Globe reported. Police said they knocked and announced their presence. Teixeira sat with his eyes closed during the arraignment.
"In other words, if you break the law, if you commit a crime, your green card should be revoked", he continued. A probable cause hearing is scheduled for June. In August 2014, Teixeira passed a note to a teller at a Boston bank demanding money.
Teixeira's court-appointed attorney did not return PEOPLE's call for comment.
"He was a valued member of the medical community and a tremendous advocate for his patients", the statement said.
"Everyone at Mass. Eye and Ear really loved her".
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