Cass County Sheriff Jesse Jahner: "We're at an all-time high for different threat levels within our country"

(Fargo, ND) -- Cass County Sheriff Jesse Jahner is expressing concerns about terrorism saying it's not a matter of if an attack will occur in the country, but when.  

"Most concerning as of recent have been some of those more federal briefings that we have received from time to time indicating that we're at an all-time high for different threat levels within our country," said Jahner.  

Jahner says his concern is based on the unprecedented number of illegal immigrants crossing the southern and northern borders. 

Regarding the immigrants, Jahner says "we don't know who they are".