EVANSVILLE, Ind. (AP) — The commander of the Indiana State Police anti-methamphetamine unit says new computerized tracking of cold medications used in making the drug hasn't yet helped investigators much.

A law passed last year required all of Indiana's pharmacies to begin using the tracking system for sales of pseudoephedrine by Jan. 1.

State police 1st Sgt. Niki Crawford says the data hasn't arrived in a useful format yet and that her unit is working with the system provider to fix the bugs. Crawford says investigators have found meth cookers paying more people to buy cold medicines for them in order to get around purchase limits.

Some legislators have tried without success this year to advance a proposal to require prescriptions to buy the medicines with pseudoephedrine.