HOLYOKE, Mass. — Police say they have found an arsenal of weapons as well as chemicals that can be used to manufacture explosives in a Massachusetts home.Holyoke police went to 49-year-old Edward Laboursoliere's home Sunday after getting a call from his wife.Police say they found 17 guns, thousands of rounds of ammunition and chemicals for making explosives, including ammonium nitrate.Not guilty pleas to 26 charges were entered on Laboursoliere's behalf at his arraignment Monday.