Cleveland police have arrested two more people in connection with the slaying of Cleveland police Det. James Skernivitz and a police informant, according to four police sources.

The sources said officers arrested the duo late Sunday. One is a juvenile and one is an adult, the sources said. Formal charges have not been filed in the case.

Three others -- two juveniles and one adult -- were arrested Friday. All three are being held on unrelated warrants. No charges have been filed against them in connection with the shooting, reports.

A $35,000 reward is being offered for information leading to an arrest and conviction in the nurder of Detective Skernivitz.

Skernivitz and an informant were killed in a car Thursday night during an undercover operation.

Several people walked up to the car and opened fire, according to police. A bullet hit Skernivitz in the chest and several bullets hit the informant, killing both.