NBA Star Zach LaVine, Cops Called After Overzealous Fan Shows Up at House

Scary situation for Chicago Bulls star Zach LaVine -- cops were called to his home Thursday night after an allegedly obsessed woman showed up at his door and refused to leave.

Our law enforcement sources tell us ... 25-year-old LaVine was at his residence when the woman arrived.

We're told Zach did not know the woman -- but she had traveled from another state demanding to have a conversation with the young superstar.

When asked to leave the property, we're told the woman refused -- so cops were called.

Once help arrived, we're told officers took her to a local hospital for a mental health evaluation -- she was not formally arrested and has not been charged with a crime.

We reached out to LaVine's camp -- so far, no comment.

It's been a big week for LaVine -- who was just named to the NBA All-Star team for the first time in his career.