A man and his parents assaulted and tried to stab officers when they responded to a report of the family arguing, police said.
Anne Arundel County Police said a 20-year-old son and his parents were arguing in a car around 11 a.m. Sunday.
When officers approached the car, police said the son assaulted the officers. After police arrested him and two more officers arrived, police said the father pulled out a butcher knife and tried to stab an officer.
Police drew their weapons and the father laid the knife down. But police said the mother tried to grab the knife before assaulting the fourth officer.
The son and mother were charged with assault while the father was charged with attempted murder and assault.