'Pharma bro' Martin Shkreli sues Retrophin directors, ex-general counsel from prison in Pennsylvania

Notorious 'pharma bro' Martin Shkreli, settled in to his new home in a federal prison in Pennsylvania, on Friday sued two directors and the ex-general counsel of his former biopharmaceutical company Retrophin, accusing them of using fraud to oust him as head of the firm in 2014.