The bodies of Tala Farea, 16, and Rotana Farea, 23, were discovered in October in the Hudson River on Manhattan's Upper West Side - two months after they were last seen in Virginia where they had been living in a shelter amid allegations they were abused at home.
Police say the sisters told people they would "rather inflict harm on themselves" then return to Saudi Arabia.
"The sisters were two of roughly 500 known individuals citywide that committed suicide in 2018".
New York Police Department Chief of Detectives Dermot Shea said they may have been abused at home, according to ABC's New York station WABC. A jogger said he saw them praying at a playground near the river, sitting about 30 feet (9 metres) apart with their heads in their hands, hours before their bodies were found, police said.
The sisters, Tala Farea, 16, and Rotana Farea, 22, were found on October 24 on the bank of the Hudson River near Manhattan's Upper West Side.
Two Saudi sisters whose bodies were found taped together on the banks of a NY river committed suicide, the city's medical examiner said on Tuesday. They traveled to New York City and stayed in high-end hotels, eventually maxing out the older sister's credit card.
The Farea sisters' deaths and the January escape of Saudi teen Rahaf al-Qunun from Saudi Arabia have put the kingdom's guardianship laws, which restrict many aspects of women's lives, back under worldwide scrutiny.
And as they ran out of money, they made a decision to take their lives together. Investigators say they believe the Farea sisters filed for asylum.
Their mother told The Post her daughters had applied for asylum, putting the family's status in jeopardy.
Detectives said that the family of the girls last saw them on November 30, 2017.