Pazen, a DPD veteran, is a Denver native and a former U.S. Marine who served during the Gulf War.
Police spokesman Sonny Jackson says preliminary information points to a conflict between the driver and passenger.
Police say the two men were stabbed with a pocket knife as they left The Church nightclub, holding hands.
The principal of Rise Up Community School says police drew weapons during a search for a student. The department has its own version of events.
There have been 27 killings so far this year, but Denver remains much safer than other cities.
Expired or unused prescription drugs are dangerous when left behind in medicine cabinets.
Outgoing public safety director Stephanie O'Malley will stay in the Hancock administration as special assistant to the mayor.
Accurate crime reports help police understand the safety of neighborhoods and calls for help. They also build community trust.
Denver is dealing with double-digit increases in car thefts and meth arrests — and experts say the two are linked.