Police are investigating a taxi-jacking.
Detectives say around 1AM Monday, a cabbie picked up a fare downtown who asked to be taken to the northeast side.
When the cab reached the 1604 and Judson area, the passenger pulled a knife and put it to the driver's throat.
The cabbie jumped out of the taxi to get away, and the knife-wielding suspect then jumped into the driver's seat and took off.
The cab was found abandoned about a mile away. The cabbie will be okay...the suspect remains at large.