Complex sentence: He was arrested in 2001, shortly after Jean-Bertrand Aristide was elected President, for plotting against the state, but was freed when Aristide was ousted in February 2004.
Split into simpler sentences: He was arrested in 2001, shortly after Jean-Bertrand Aristide was elected President, for allegedly plotting against the state. Avril was freed when Aristide was ousted in February 2004.