Three suspects have been arrested in connection with an armed robbery in Sparks. It was about 4 oclock Monday morningh when three men walked ilnto the 7-11 store on G street wearing masks and hooded sweatshirts. The clerk told police they cornered him,pulled a knife and threatened him. They ended up stealing beer. The store owner reviewed the surveillance tape and recognized one of the robbers. Police tracked him down, and sure enough he was with the other two men, and the stolen beer.