A third homeless person was stabbed to death on Jan 28, although CNN noted that the incident could have arisen from an altercation.
"We must stop this man before he shoots and kills someone else", Plummer said. Two have died from their injuries.
About 40 minutes after police were first called, a related abuse call was generated for the same address, police said.
Las Vegas police responded to a motel at 117 N. 9th St. about 4:20 a.m. after a couple said their baby was having a medical crisis, police said.
The suspect was driving what appears to be a Hyundai Tucson SUV, police said.
The most recent killing took place early Friday when 64-year-old James Edgar Lewis was shot while sleeping under an overpass in downtown Vegas.
Las Vegas police released graphic video of the shooting, captured by surveillance cameras, in an effort to identify the suspect.
"We can't 100 percent say they're connected, but there are some similarities", said Metro Lt. Dan McGrath per the Las Vegas Sun.
On Jan. 29, a homeless man was shot and killed while sleeping outside the Rancho Discount Mall in the 2900 block of.
'He is armed and risky and is targeting the homeless, our most vulnerable citizens'.