Rapid City police are searching for a man they say robbed a drug store Wednesday morning.
Police identified the man as 29-year-old Nick Perry, of Rapid City.
"Perry should be considered dangerous, and should not be approached," the department said in a news release.
After authorities learned that Perry might be in a home in the 1500 block of Degeest Drive, a Special Response Team was deployed to the area Wednesday afternoon. The team remained on the scene for several hours, finally entering the home around 8 p.m.
"Suspect not inside," Rapid City police tweeted after a search came up empty. "Always a reality in our line of work. We will make sure he is held accountable for his actions."
Police say Perry robbed Boyd's Drug Mart on East St. Patrick Street around 9:30 a.m. Wednesday with a "blunt object" and assaulted an employee, who suffered minor injuries.
Earlier in the day, Robbinsdale Elementary and South Middle School were placed on secure status for about 30 minutes as a precaution.
Two other schools, Valley View Elementary and East Middle School, were also placed on secure status Wednesday afternoon due to "an active law enforcement event," the Rapid City school district said.
Buses ran as usual when the schools let out for the day, but students at the two schools still on secure status were not allowed to walk or bike home; they had to be picked up by a parent or guardian.
School and law enforcement officials said students weren't in any danger. "We simply want to prevent children wandering into an active law enforcement scene," said a statement from the school posted to its Facebook page.
Anyone with information on Perry's whereabouts is asked to call 394-4131.