Utah legislative committee holds watered-down bill addressing controversial no-knock warrants The bill’s sponsor and law enforcement groups remained at an ‘impasse’ over a provision prohibiting no-knock warrants when their aim is to preserve evidence. (Jeremy Harmon | The Salt Lake Tribune) Police officers in Utah submit thousands of search warrants a year to judges, who are tasked with reviewing the paperwork and determining whether there is a probable cause to believe a crime has been committed. A Utah lawmaker is currently running a bill to rein in the use of no-knock warrants in the state. | Updated: Feb. 18, 2021, 1:29 a.m. A watered-down version of a bill seeking to rein in the use of controversial “no-knock warrants” — which allow police to burst into someone’s home without warning in order to make an arrest or search for evidence of crimes — stalled again in a House committee on Tuesday.