SAN ANTONIO The San Antonio City Council will discuss possible bans on police use of neck restraints and no-knock warrants amid nationwide calls for police reform. Outside of that, the chief said an officer would be in violation of department policy and could face administrative and criminal problems. The department suspended its no-knock policy in June, and no warrants have been issued since, he said. The department is currently finalizing a new policy, the chief said, that would ban the use of no-knock warrants for search warrants across the board. No-knock warrants for arrests would only be allowed in exigent circumstances (that) pose a serious threat to the safety of the officer or members of the public, he said.