OAKLAND (KRON) — A suspect is dead and an officer suffered serious injuries after an early Monday morning shooting in Oakland near the MacArthur BART station.

An sergeant and an officer responded to reports of a sexual assault incident in the 3800 block of Martin Luther King Boulevard around 1:32 a.m., according to the Oakland Police Department.

When they arrived, they encountered an armed man who opened fire on the officers, striking one of them.  The officers returned gunfire, shooting the suspect.

“While officers were in front of the residence, the suspect came out and began shooting at the officers with an assault rifle,” Oakland police said.

The sergeant was shot during the exchange of gunfire. Both the sergeant and the suspect were transported to a local hospital for medical treatment, police said.

The suspect, a 49-year-old Oakland resident, was pronounced dead, according to police.

The wounded officer underwent emergency surgery, and he has been listed in serious condition according to a police spokesperson.  More surgeries are expected later.

And at about 4:20 p.m. Monday, a police spokeswoman said he is undergoing his second surgery.

The incident is being investigated by the Oakland Police Department’s Homicide Section and the Internal Affairs Division.

The identities of the officers are unknown at this time, but officials have said that the injured sergeant is a 14-year veteran of the department and the officer has been with the force for only one year.

Oakland Mayor Libby Schaaf said Police Chief Sean Whent called her shortly after the shooting and she visited the sergeant at the hospital from about 2:30 to 4:30 a.m., arriving even before his family did.

Schaaf said, “He was in a great deal of pain and his injury was very serious but he was incredibly brave and was focused an assisting the doctors.”

The mayor said being with the sergeant and his family at the hospital was “very poignant for me.”

Schaaf said she had met the officer and his family when he was promoted to sergeant recently and described him as “an outstanding officer.”

Schaaf, who attended the memorial service last Thursday for Hayward police Sgt. Scott Lunger, who was fatally shot while making a traffic stop in Hayward on July 22, said the shootings of Lunger and the Oakland sergeant “are examples of the real danger that officers put themselves in every day to make our communities safer.”

Schaaf said the shooting in Oakland this morning is a reminder that the community needs to keep working on ways to “reduce violence in this city by creating opportunities for hope and peacefulness.”

According to police, an independent and concurrent investigation is also being conducted by the Alameda County District Attorney’s Office .

Stay with KRON 4 as more information is made available.