A young Irish-American woman is in grave condition after she and her college friend were mown over by a hit and run driver  at Flatbush Avenue in Brooklyn on Sunday morning.

Erinn Phelan, who works in Mayor Bloomberg’s office for the NYC Civic corps, took the full brunt of the impact when she pushed her friend Alma Guerrero out of the way.  Phelan has been declared brain dead.

Guerrero is in a stable condition and is expected to recover. Her father, Fidel, confirmed that his daughter's injuries would have been far worse had her friend not pushed her out of harm’s way.

The 22-year-old Phelan, a native of Swampscott, MA, was college roommates with Guerrero and the latter was in town to visit her friend for the weekend.

Mayor Bloomberg visited King’s County Hospital on Sunday to see Phelan and her family and released the following statement:

"When I spoke to Erinn's parents earlier today, I told them that as a father I can’t begin to imagine what they are going through.

"Our prayers are with their dedicated and idealistic young daughter who's helping New York City answer President Obama's historic call to service."

The driver of the car sped away from the scene, but was followed by a taxi driver who tailed the woman until she ditched the car a few blocks away.

The police are looking for the woman the car is registered to, Bronx resident Cindy Jasmin (31).

With the subway and LIRR close by,  it is believed Jasmin may have fled the scene by train.