All policemen in the city, in the exercise of their sound discretion, may arrest, without a warrant therefor, any person found in suspicious places or any person found under circumstances reasonably tending to show that such person has been guilty of some felony, breach of the peace, a violation of this code or some other municipal ordinance or is about to commit some offense against some state law or against this code or some other municipal ordinance. (Code 1941, Art. 109-5; Ord. 4290)