A 91-year-old Brooklyn man is dead, after he and his 100-year-old wife were tied up in a home invasion Wednesday, police said.

Police say at least two people entered the apartment at Decatur St. near Marcus Garvey Boulevard in Bedford-Stuyvesant around 3:30 p.m. and bound the couple.

According to the police department, Ethlin Thompson eventually untied herself and called 911 after the perpetrators tied up her and her husband, Waldiman Thompson.

When officers arrived, they said they found the home ransacked, and Waldiman tied up on the floor and unresponsive.

He was transported to a local hospital, where he was declared dead. Officials said he suffered a heart attack.

The city police department said Ethlin is in stable condition and does not have serious injuries.

Police said they are treating this as a home invasion robbery homicide.

Police said they are not sure what was taken from the home.

Relatives say Ethlin is a retired nurse who once cared for children with developmental delays, and remains active enough that she is often seen riding her bike throughout the neighborhood.

Her husband is in more frail condition. Thompson's niece Karlene Grose said the family spent time together on Sunday, not knowing it would be their last time seeing him.

"He came to see his sister because my mom is critically ill and he wanted to see her before she died, and now he died before her," Grose said, fighting back tears.

NY1 was told that the Thompsons lived in their home for at least 35 years.

The investigation is ongoing. Investigators said they are going through the home, combing for evidence.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577- 8477, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com