Gregg Lukenbill, the managing general partner of...

Gregg Lukenbill, the managing general partner of the Sacramento Kings of the NBA, was among “a number of people” who have been subpoenaed to testify before a grand jury investigating whether he made an illegal campaign contribution aimed at defeating a downtown baseball stadium in San Francisco, according to a report.

The investigation centers on whether Lukenbill, who is also seeking a major league baseball franchise and a pro football team for Sacramento, secretly funneled a $12,500 contribution to an anti-stadium campaign.