PIERRE, S.D. — Industry groups have filed a court challenge to the South Dakota attorney general’s explanation of a ballot question that would cap how much state agencies could pay for prescription drugs.

South Dakota Biotech and Washington-based Pharmaceutical Research and Manufacturers of America are asking a judge to direct Attorney General Marty Jackley to modify his explanation.

The initiative would impose a price limit on state drug purchases to the lowest price paid for the same drug by the U.S. Department of Veterans Affairs.

The groups say the explanation falls short because it doesn’t mention language giving supporters legal standing if the initiative’s challenged. Supporter Rick Weiland says the groups are trying to “throw some sand in the gears.”

A Jackley spokeswoman didn’t immediately return an email requesting comment.