SAN JUAN, Puerto Rico An investigation into three apparent suicides at the U-S prison at Guantanamo Bay may have uncovered a broader plot. According to court papers, a search of other detainees' cells after the three were found hanged turned up instructions on tying knots, along with several relevant notes in Arabic. The detention center's commander said in an affidavit investigators believe "the suicides may have been part of a larger plan or pact for more suicides that day or in the immediate future." Authorities say they confiscated personal papers from nearly all 450 prisoners at Guantanamo Bay. The government...