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WASHINGTON (AP) — Diners will have to wait a little longer to find calorie counts on most restaurant chain menus, in supermarkets and on vending machines.

The head of the Food and Drug Administration says writing a new menu labeling law "has gotten extremely thorny" as the agency tries to figure out who should be covered by it.

The 2010 health care law charged the FDA with requiring restaurants and other establishments that serve food to put calorie counts on menus and in vending machines. The agency issued a proposed rule in 2011, but the final rules have since been delayed as some non-restaurant establishments have lobbied hard to be exempt.

The FDA has said the rules may come out this spring, but the agency may not meet that deadline.

Authorities in Franklin County want to talk to a woman who reported seeing a car drive into the Meramec River Monday evening. Sheriff's deputies say the woman had reported it to a park ranger at Meramec State Park around 5:30 p.m.

The park ranger attempted to locate the car, but couldn't find it. He also lost touch with the woman who'd made the report.

She's described as a white woman driving a white, Chevy Malibu.

Anyone with information is asked to call the Franklin County Sheriff's department.

Streetcars will be returning to the Delmar Loop. Monday evening, the University City Council unanimously approved "conditional use" permits for the Loop Trolley Company.

Plans call for the streetcars to run down Delmar to DeBalivier, then south to the Missouri History Museum in Forest Park.

The project is expected to cost around $40 million, with $25 million coming from a federal grant.

The trolley should be up and running by late summer of 2014.