Six-year-old twins who were critically injured when a fire tore through a Bronx apartment building and killed their 1-year-old brother last week have since died, according to the devastated parents forced to bury all their children.

Father Kwesi Harris confirmed to The Post from a funeral home on Monday that his 6-year-old children, Isis and Oseases Parks-Harris, died from injuries they suffered in a blaze that erupted at their building on Bainbridge Avenue last Monday.

His 1-year-old son, Liam Parks-Harris was pronounced dead in the hospital shortly after the flames broke out on the second floor of the building. Witnesses recalled seeing the soot-covered baby being rushed out of the building by firefighters.

Harris, 50, said his last memories were of kissing his son and saying goodbye to his family before leaving for work on the fateful day.

“My wife already cooked at 12:35. I collect my food at 1 o’clock, then I kissed my son and said I’m going to work,” Harris recalled over the phone.

“At 3 something, she called in and tell me the building on fire. The first thing that comes to my head … where’s my f—king children? I drove right away from Brooklyn,” he added.

The heartbroken father said his wife had to be held back from running into the fire to collect her children.

“[My wife] had wanted to run in the fire. My friend… told me yesterday….’If I did not hold back your wife, she did not care about fire. She wanted to go in the fire and collect her children,'” Harris said.

“I say, my brother, thank God that you hold her back. I would be burying my f–king children and my wife right now today.”

“She was holding Liam at the hospital, the day of the fire, when I got there,” Harris said. “That’s a good mother.”

Harris said his best memories were exercising with his two sons and daughter and doing homework with them on the weekends.

“My best memory with them is when I’m exercising, they want to exercise with me. I was in the army for 10 years in my country, so this is what I do,” he recalled.

“When I’m home Saturday and Sunday, those are the two days I spend with my children. I don’t go nowhere. I spend time with them, I do the homework with them. I ask them, ‘How was the week for them? How was their friend? Is anybody bullying them?'”

Two other civilians were hospitalized along with three firefighters, who suffered minor injuries, officials said. 

Harris claimed that large rats in the building walls have bitten electrical wires, and that several e-bikes, known to cause fires, are typically stationed at a restaurant downstairs.

“These people need to investigate the fire,” he said.

The Fire Marshall’s office is continuing to investigate the cause of the blaze, according to the FDNY.