UPDATE: Las Vegas police held a press briefing on Wednesday to talk about the investigation into the murder of a security guard in early May.
Police say they have not forgotten about the case and are still looking for his killer or killers.
Mark Santee's daughter also spoke at the press briefing, pleading for help from the general public.
LAS VEGAS (KTNV) -- The daughters of the security guard killed last week spoke out for the first time Tuesday evening.
It came just hours after Las Vegas police released surveillance video of an orange or red Chevrolet Avalanche or Cadillac Escalade EXT truck believed to be connected to 48-year-old Mark Santee's death. It was last seen traveling southbound on Hacienda Avenue from Jerry Tarkanian Way.
His daughters were afraid to show their faces since an arrest has not yet been made.
"He was much more than the security guard," said one of his daughters.
Another said, "He meant more to us than anything."
Santee was unarmed and may have been trying to stop thieves when he was killed last Wednesday near Tropicana Avenue and Fort Apache Road.
His mother was also pleading with the public to help find his killer.
"Las Vegas is a wonderful community," said Alice Santee. "And these person or persons are out there. If they did it once they can do it again."
A GoFundMe has been set up for Mark Santee's funeral expenses.
Anyone with any information on the whereabouts of this vehicle is urged not to approach it, and to contact 311 or call Crime Stoppers by phone at 702-385-5555.