El Paso Matters filed a lawsuit Thursday asking a state judge to lift a blanket of near-total secrecy on records in the 2019 Walmart mass shooting held by El Paso police and prosecutors.

The petition seeks a writ of mandamus, an order from a judge to a government official to perform a mandatory legal duty required by law.

El Paso Matters is asking a judge to order the District Attorney’s Office and the city of El Paso to make investigative records from the Walmart mass shooting investigation available to the public as outlined in the Texas Public Information Act. The case was assigned to 243rd District Court Judge Selena Solis.

The Texas Attorney General’s Office issued several rulings over the past 18 months that said the public should never have access to investigative records in the deadliest mass shooting targeting Hispanics in modern U.S. history.…