New York City police are searching for a suspect in connection to an attack and home invasion robbery in Upper Manhattan that left a 99-year-old landlord hospitalized.

The victim's wife says the suspect tricked her husband into thinking he was meeting to pay rent.

The NYPD is now asking the public for help identifying the person responsible.

"The man called twice saying he had a package"

Carmen Tur told CBS News New York her husband, Jose, has a long road to recovery after he was assaulted outside their building along West 187th Street in Washington Heights on Monday morning. She said in Spanish that the suspect put a gun to her husband's neck and then to his waist.

She said her husband thought he was meeting with the suspect to receive rent money on behalf of a tenant.

"The man called twice and said he had a package for [apartment] 32," Carmen Tur said.  

However, when the suspect pulled up covered in clothing from head to toe, she says the 99-year-old knew something was off.

Surveillance video shows the landlord opening the basement door and then a small struggle ensues before the suspect shoves his way inside while pulling out a gun. According to police, he then shoved the landlord down the hallway to an office, where he grabbed $20,000 before taking off.

99-year-old later had a stroke

The landlord's daughter-in-law says after he was treated and released from the hospital for minor injuries suffered in the attack, the landlord suffered a stroke the very next day.

"He's 99. It has been really tough for all of us. We just want him to pull through and stuff, praying for him [that] everything works out," she said.

Description of the suspect

Police released video and are asking for the public's help identifying the suspect. He was last seen wearing a black ski mask, gray sweatshirt, and black sweatpants.

"For someone to go out and rob a 99-year-old, you have to have ... you have no conscience, pretty much," the daughter-in-law said.

The family said the 99-year-old has been the landlord at the building for more than 40 years. He's currently still in the hospital recovering.

Anyone with any information is asked to call the NYPD's Crime Stoppers hotline at 1-800-577-TIPS (8477), or for Spanish, 1-888-57-PISTA (74782). You can also submit a tip via their website or via DM on Twitter, @NYPDTips. All calls are kept confidential.