An already tragic and dangerous shootout in a quiet Stamford neighborhood just got even grimmer.

Police discovered a decomposed body inside the suspect's home, which was booby-trapped with explosives, Chief Timothy Shaw announced on Wednesday.

"While checking the home for explosives, a second body was discovered on the second floor," Shaw told reporters. "The body was concealed and appeared to be in a decomposed state. The Stamford Police Department Major Crimes Unit will oversee the investigation of the second body discovered."

So far, investigators know very little about the victim, including the person's age or gender, because the house was filled with pipe bombs, grenades and a Molotov cocktail explosive.

"We don't have enough information just yet because half of it was done through drone footage," Shaw said. "And the bomb squad is still clearing it."

The normal quiet of Oaklawn Avenue was shattered by rapid-fire gunshots for hours on Tuesday.

The deadly standoff began when a state marshal arrived to evict Jed Parkington and his wife from 263 Oaklawn Ave., where the couple had lived since 2005. A realtor handling the home's sale told News 12 Connecticut that Parkington answered the door in a gas mask, wearing military fatigues and canisters tied around his waist.

Parkington released his wife unharmed, allegedly telling the marshal the situation "wasn't going to end well." Police plan to interview the suspect's wife.

After Stamford police surrounded the home, hostage negotiators communicated with Parkington, according to Shaw. But when two armored BearCat vehicles moved in just before noon, the homeowner fired dozens of AK-47 rounds at police.

Photos show that the bullets nearly penetrated the 3-inch-thick glass.

None of the officers were injured.

Hours later, police said that Parkington fired several more rounds at their drones before killing himself with a single gunshot.

Tuesday's shootout capped off a years-long legal battle over the home. A housing judge issued a final eviction order on Monday.

In a last-ditch effort to stay in her house, Parkington's wife wrote that she suffers from "diabetes, depression and memory loss" and pleaded with the judge to "please have mercy on me and allow me, my husband and my dog, to stay in my home until after the holidays."

In an earlier hand-written court filing, Jed Parkington said he suffered from a "cancerous tumor in my head."

"Decent people who actually got behind on their mortgage," said neighbor John Gallup. "They were in bad health. Both of them had some issues ... This is totally sad. It shouldn't have happened."

But news that detectives discovered a long-dead body in a house filled with explosives now has neighbors re-thinking the couple.

"You really don't know your neighbors," said Stefanie Faugno, who lives two blocks away. "It's scary. You know, it's really scary. You just — you really don't know. You just — you wouldn't expect it."

Local and state investigators will continue combing through the house for another day or two, police said.

The shootout investigation is now being led by the state police inspector general, which must release all body camera footage by Saturday.

“When the video comes out, you'll realize how close it was for that windshield to be penetrated to the point where we might have lost some officers’ lives," said Shaw.