A Massachusetts man allegedly tried to steal thousands of dollars worth of tools from two Nashua stores.Police said Jonathan Alberto, 26, of Andover, was stopped by loss prevention officers at Sears on April 30 after walking out of the store with more than $1,500 worth of tools, but he managed to get away.Then on May 18, Alberto allegedly stole more than $1,000 worth of tools from the Lowe's up the street.He was arrested on two felony counts of theft by unauthorized taking or transfer.