Complex sentence: After the death of his mother three years prior to the shootings, Pough was said to have emotionally changed for the worse, saying that he had nothing left to live for and arguing that he would "take someone with him when he leaves this world".
Split into simpler sentences: After the death of his mother three years prior to the shootings Pough was said to have changed for the worse. Stating that he had nothing left to live for, he argued he would "take someone with him when he leaves this world".