Undercover detective charged in motorcycle mob attack

Police have now arrested six bikers in connection with the assault on Alexian Lien.



Another update on the crazy biker chase beatdown... This case has had so many weird developments and multiple suspects -- including several friggin' undercover cops -- it's hard to keep up.

An undercover police detective and another man were arrested Tuesday in connection with the motorcycle mob attack on driver Alexian Lien, who was dragged from his car and beaten by a group of bikers last week in Manhattan: Undercover Cop Among Latest Arrests In Manhattan Motorcycle Melee.

For those who are not quite up to speed with this story, the abridged version... A motorcyclist, riding with a pack, brake-checks a Range Rover and gets hit. Bikers surround the SUV. The driver -- who's with his wife and 2-year-old daughter -- takes off, plowing through several motorcycle riders and sparking a crazy pursuit on the West Side Highway. Driver gets chased down, pulled out of his car and beaten in front of his family.

For your reference, here's the helmet-cam video that got everybody's attention. And here's new video that catches the tail-end of the assault, with Lien left beaten and bloody on the ground:

The Crazy Biker Chase Case Gets Crazier

Several suspects identified... plus an undercover cop(!) at the scene.



More developments in the crazy biker chase road rage incident on the West Side Highway...

Police have reportedly identified one of the prime suspects directly involved in dragging driver Alexian Lien from his SUV and beating him: New York road-rage suspect identified in beating of SUV driver.

Also, the biker who allegedly opened the SUV's door at an earlier point during the chase, is now in custody.

Meanwhile, an off-duty undercover detective has informed Internal Affairs that he was present at the time of the confrontation between the bikers and Lien: Another in custody, undercover cop among bikers.

If you haven't been following what went down last Sunday, the abridged version: A motorcyclist, riding with a pack, brake-checks a Range Rover and gets hit. Bikers surround the SUV. The driver -- who's with his wife and 2-year-old daughter -- takes off, plowing through several motorcycle riders and sparking a crazy pursuit on the West Side Highway. Driver gets chased down, pulled out of his car and beaten in front of his family.

For your reference, here's the helmet-cam video.