BUFFALO, N.Y. (WIVB) -- A West Seneca man pleaded guilty to sexually abusing a child in 2010 and 2011. Robert S. Riggs, 53, pleaded guilty last Thursday before the State Supreme Court on one count of first-degree sexual abuse. The DA's office says that between Dec. 1, 2010 and Jan. 31, 2011, Riggs subjected a [...]