Five people were injured, two of them seriously, in an early morning fire in Jefferson Valley.

Mohegan Lake Fire Chief Joseph Mayer says the call reporting  of a structure fire with people trapped inside first came in at 5:35 a.m.

Mayer says a trooper passing by spotted the blaze and alerted the residents in the home at 1390 Gomer Court and began evacuating them. Fire officials arrived at the home to find it fully engulfed in flames.

Westchester Medical Center announced today that it's adding renowned cerebrovascular and endovascular neurosurgery specialist, Dr. Michael Stiefel to its staff.

Dr. Stiefel comes to WMC after serving as an Assistant Professor of Neurosurgery and the Associate Director, Neurocritical Care and the  Director of Comprehensive Cerebrovascular and Endovascular Neurosurgery Program Hospital of the University of Pennsylvania.

Dr. Stiefel performs microsurgical and endovascular procedures for the treatment of cerebral aneurysms, arteriovenous malformations (AVM's) arteriovenous fistulas (AVFs)carotid stenosis, intracranial stenosis, stroke, subarachnoid hemmorhage, stenting and bypass procedures.

He has also done extensive research in the areas of developing novel endovascular techniques for the treatment of cerebral aneurysms and ischemic stroke.

Dr. Stiefel was born and raised in Brooklyn, N.Y., received his medical degree and PhD from the Medical College of Virginia, and currently resides in New Rochelle with his wife and daughter.

Police are still trying to determine who dumped a black bag  containing medical waste with a note for police, at the behavioral health center at Westchester Medical Center in Valhalla yesterday. Officials have not released details of the message and would only say it contained a threat toward police.

A Westchester County Police officer is being hailed a hero after he rescued a man after his car plunged into the Bronx River in Yonkers Sunday night. The accident happened around 6:15 on the northbound side of the Bronx River Parkway, when a car lost control, went over an embankment near the Yonkers Avenue Exit and landed upside down in the river.

The accident forced the closure of the northbound parkway for several hours, leaving the Bronx River Parkway looking more like a parking lot as rescue efforts unfolded.

A motorcyclist was killed Sunday afternoon after his motorcycle collided with a car on Dobbs Ferry Road. Police say the accident happened around 5 p.m. as the motorcycle was traveling straight on route 100B. A car, described as a white Toyota, struck him as it attempted to make a left turn onto the southbound Sprain Brook Parkway.

Officials say the Irvington Police officer critically injured in last week's high speed car chase continues to improve. Irvington Police Chief Michael Cerone says Officer Luigi Osso remains in critical but stable condition at Westchester Medical Center. Chief Cerone says Osso is less sedated and has surgery planned for today. He says "While Osso is not out of the woods just yet, it definitely is moving in a positive direction."

More than 100 people attended a special prayer service for the injured officer at Immaculate Conception Church on Broadway last week.

Osso sustained severe head trauma and other injuries around 9 p.m. April 21 after his police cruiser was struck by a stolen 2001 Ford Mustang.

Authorities say 31 year old Irvington Police officer Luigi Osso suffered severe head trauma and several broken bones last night when his cruiser was struck head -on at a high rate of speed by a stolen 2001 Ford Mustang driven by a 16 year old boy from Connecticut. Irvington Police Chief Michael Cerone says the devastating crash occurred at the intersection of Main Street and North Broadway (U.S. Route 9) shortly ater 9 p.m. Wednesday evening.

Both the officer and 16 year old suspect had to be extricated from their vehicles. Both were transported to Westchester Medical Center for treatment.

Officer Osso sustained severe head trauma and serious injuries to his entire body. He has undergone several surgeries and is in critical but stable condition. Irvington Police Detectives are conducting a full investigation and are being assisted by the Westchester County District Attorney's office, the Westchester Dept. of Public Safety, Elmsford Police Dept and PDs from Tarrytown and Ardsley.

Police Chief Cerone says the suspect will likely face a variety of charges including vehicular manslaughter and reckless endangerment.