Police have identified the two victims killed in a Saturday night shooting at a Sonic Drive-in in Bellevue, Nebraska, as well as the suspect.

The suspect has been identified by police as 23-year old Roberto Carlos Silva Jr, Bellevue Police Department said in a press release on Sunday.

Silva is being held at the Sarpy County jail on suspicion of two counts of first-degree murder and one count of first-degree arson, the release said.

CNN has not been able to determine if Silva has a lawyer.

Police initially responded to a call about a possible bomb inside a moving truck in the parking lot of the drive-in shortly before 9:30 p.m. (10:30 p.m. ET) Saturday and then received other calls about a shooting.

The two victims who were declared dead at the scene have been identified by police as 22-year-old Nathan Pastrana and 28-year-old Ryan Helbert.

Two other victims were transported to the University of Nebraska Medical Center after the shooting Saturday, police said in an earlier press release.

Lt. Andy Jashinske said there was a moving truck on fire in the Sonic parking lot but no bomb was found. Police said there was is no indication that any other suspects were involved.

CNN's Jenn Selva contributed to this report.

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