Maryland Arrest Laws

2-204.

(a)      A police officer without a warrant may arrest a person if:

(1)      the police officer has probable cause to believe that:

(i)      the person battered the person’s spouse or another person with whom the person resides;

(ii)      there is evidence of physical injury; and

(iii)      unless the person is arrested immediately, the person:

1. may not be apprehended;
2. may cause physical injury or property damage to another; or
3. may tamper with, dispose of, or destroy evidence; and

(2)      a report to the police was made within 48 hours of the alleged incident.