A call to police about assault in Waterloo resulted in a visit from the tactical unit.
The call came in just before 6:30 p.m. Thursday evening to a home on Laurel Street.
Regional Police say the suspect barricaded himself in the home for several hours.
The situation wrapped up around 10 p.m. after the tactical unit entered the home.
A 24 year-old man has been charged and remains in custody.