SAO PAULO (AP) — The head of Brazilian state-run bank Caixa Economica Federal has resigned amid a sexual harassment investigation towards him. A day earlier than Wednesday’s announcement by Pedro Guimarãe, the web site Metrópoles reported that prosecutors are investigating accusations by no less than 5 staffers towards the bank official. The case is sealed, in keeping with Brazilian media. Caixa is a key bank for Brazil because it pays many authorities handouts.