School officials locked down schools in Brown County Friday morning after reports of suspicious activity.
Friday morning, an Aberdeen Central student reported seeing someone with a gun in the parking lot.
Aberdeen police say they had also noticed some vague threats toward schools posted in online chats.
A search of every school in the county did not find a threat to the schools and officials lifted the lockdown by 9:15 a.m.
This article has been revised to reflect the following correction:
A misspelling was corrected in this story.