MEDFORD - Police descended on a house in Medford this morning and made two arrests in the quadruple murder that occurred at a pharmacy on Sunday.

Suffolk police say they have arrested 33-year-old David Laffer and his wife, 29-year-old Melinda Brady, in connection with the murders.

Witnesses say that at around 10 a.m., police and SWAT teams in bulletproof vests swarmed a house on Pitchpine Place in Medford, about two miles from the pharmacy.

"He looked like death," says eyewitness Peter Spano, referring to the male suspect. "He had that look of someone who has been through hell." Neighbor Christine Baldwin says undercover police vehicles had been stationed on the block for the past few days.

The quiet community of Medford was horrified this week when Haven Drugs, a privately owned pharmacy, was stormed by the lone gunman. Police say they believe Laffer was trying to steal prescription pain killers before he gunned down all four people in the store, including a 17-year-old girl who was just days away from graduating high school.

Victim Jamie Taccetta's grandmother, Pat Moran, arrived at the scene and said, "I wish they [the police] would have shot him from the ankles up, a slow death and four bullets in his head."

Police say Laffer has been charged with first-degree murder and resisting arrest. Authorities say his wife was arrested for third-degree robbery and obstructing governmental administration.

Both suspects are scheduled to be arraigned Thursday. Suffolk police say they are also planning a 10 a.m. news conference.

Continuing coverage: Medford pharmacy massacre