Uber investors go head to head. Again.

The ghost of Travis Kalanick continues to haunt the boardroom of Uber as two of the firms top investors threaten to sue the former Chief Exective. 

According to Arstechnica, Shervin Pishevar and Steve Russell have informed three current board members, of which one includes Travis Kalanick, that they will sue them if they choose to support a proposal that would eliminate some powers bestowed on the apps board of directors. The powers currently give some investors of the minicab firm the chance to have multiple votes per share. However, if the proposal is supported and put in place that would create equal voting rights.

This is just the latest chapter in a long series of spats in the boardroom and there seems to be little sight of a resolution as all investors fight for their funds.