警察官 (keisatsukan) Japanese meaning: police officer | KotomoraA police officer is directing traffic.
He is studying to become a police officer.
Usage patterns
警察官になるto become a police officer
He says he wants to become a police officer in the future.
警察官に捕まるto be caught/arrested by a police officer
He was caught by a police officer for speeding.
警察官に職務質問されるto be questioned by a police officer (on the street)
I was stopped and questioned by a police officer while walking late at night.
警察官 means a police officer in general, while 捜査官 specifically denotes someone conducting criminal investigations.