Police on Saturday arrested a 55-year-old man after he was allegedly found carrying a bullet.
The force said that at 6 pm, officers had been patrolling Nam Ning Street in Aberdeen, when they saw a man who they believed to be acting suspiciously.
The force said officers stopped and searched the man and a bullet was found.
Officers then arrested the man on suspicion of possessing ammunition without a license.
On Sunday morning, police said the man had not been charged, although he remains in detention.