At least two men, wearing masks, ran in to a blood bank allegedly trying to rob it.
Employees and people donating at Plasma Centers of America along Florin Road were startled.
The men apparently quickly left the center and ran off into the South Sacramento area.
Sacramento County Sheriffs deputies were able to arrest at least one guy they believe was involved. They are actively looking for others at this time.
No word from investigators what the men were hoping to take from the blood bank.