RALEIGH, N.C. (AP) — Current and retired state employees want the North Carolina treasurer to answer questions about why the state’s pension fund used a firm that invested in Facebook stock.

The 618,000 shares the state currently has in the social media company are worth just half of the $38 per share paid for after Facebook’s initial public offering in May, according to The News & Observer of Raleigh (http://bit.ly/Ohhx22).