NYC Grandma Who Went Missing In Las Vegas Found Dead

The case of a New York City grandma who's been missing for two weeks in Las Vegas -- while a stranger used her phone to ask for bitcoin -- took a sad and bizarre turn on Thursday ... when she was found dead near the airport.

Here's the deal ... Alisa Goods was visiting a friend in Sin City, and she left their home on August 8 to go shopping at CVS and vanished. Days after she disappeared, someone began messaging from her phone, asking her family for bitcoin.

Sadly, police say they discovered the 63-year-old's body on Thursday near Harry Reid International Airport -- a development that raises so many questions.

Authorities were reportedly led to the location after surveillance footage showed Alisa near the airport the same day she disappeared. Why she was there deepens the mystery.

According to local station KTNV ... police are playing this one close to the vest -- and won't comment on the cause or manner of death.