The securities fraud trial for pharmaceutical executive Martin Shkreli, now in its fifth week, is grinding to its conclusion.

On Monday, prosecutors from the Eastern District U.S. Attorney's Office called their final witness, FBI agent Michael Braconi, and said they could rest as early as Tuesday.

Shkreli, who achieved notoriety when he increased the price of a life-saving drug for HIV and AIDS sufferers from $13.50 to $700 per pill, is accused of defrauding investors in two hedge funds he founded and paying them back by misappropriating $11 million in assets from Retrophin, another firm also co-founded by Shkreli.