Update, 11:55 p.m., Dec. 7:
Montgomery County police issued the following news release late Wednesday:
"Detectives from the Montgomery County Police-Collision Reconstruction Unit are investigating a pedestrian collision that occurred on Rockville Pike near Halpine Road.
On today's date at approximately 5:57 p.m., 1st District officers and Rockville City Police officers responded to a personal injury collision involving a pedestrian and a Ride On at the intersection of Halpine Road and Rockville Pike (Route 355).
Preliminary investigation indicates that a Ride On bus was in the westbound lanes of Halpine Road attempting to turn right onto northbound Rockville Pike. For reasons still under investigation, the bus struck a female pedestrian who was crossing west in the northbound lanes of Rockville Pike. She was transported to Suburban Hospital with life-threatening injuries.
The pedestrian has been identified as Jila Hamidieh, of the 200 block of Congressional Lane in Rockville. She is 63 years old.
The driver of the Ride On bus has been identified as Fredy Oscar Velasquez, of the 800 block of Harrington Road in Rockville. He is 58 years old.
Anyone who has information about this pedestrian collision is asked to contact the Collision Reconstruction Unit at 301-840-2435. Callers may remain anonymous."
Update, 11:40 p.m., Dec. 7:
Contrary to an earlier report, the woman struck by a Ride On bus on Rockville Pike on Wednesday evening has not died, NBC4 reports.
NBC4 had reported earlier on its 11 p.m. newscast and on its website that the pedestrian had died. Shortly before signing off on the newscast, NBC4 said that county police had called to correct that report.
The woman suffered life-threatening injuries, according to the corrected report.
Update, 11:25 p.m., Dec. 7:
A woman has died after being struck by a Ride On bus on Rockville Pike at Halpine Road near the Twinbrook Metro station on Wednesday evening, according to reports.
Rockville Pike reopened late Wednesday after being closed for several hours as police investigated the incident, according to NBC 4, which reported that the vehicle involved was a Ride On bus.
The Washington Post reported that the victim was a woman. The victim's identity remains unknown and the cause of the incident remains under investigation.
Original post, 9:40 p.m., Dec. 7:
Northbound Rockville Pike remains closed at Halpine Road near the Twinbrook Metro station after a pedestrian was struck by a vehicle Wednesday evening while trying to cross the pike, a county police spokeswoman said.
Little information is available at this hour. The victim, whose identity was not immediately available, sustained serious, possibly life-threatening injuries, the spokeswoman said.
Montgomery County Fire and Rescue Assistant Chief Scott Graham told The Gazette that the victim was transported to a trauma center after the incident, which occurred at 5:58 p.m. in the 1700 block of Rockville Pike.
County police's Collision Reconstruction Unit is conducting an investigation at the scene.
Traffic was snarled in the area during the evening rush hour as police diverted traffic into a nearby shopping mall, backing up traffic into North Bethesda.