The Riverside Police Department was in a standoff with a possibly armed subject early Thursday morning, August 15, 2019. The standoff occurred in the 8400 block of Hermosa Drive, north of Dufferin Avenue, east of Gratton Street. Details surrounding the incident were limited however, initial reports indicated an officer suffered an unknown injury during the standoff and was transported to an area hospital. The City of Riverside Fire Department as well as AMR were requested to stage nearby while the incident unfolded. No further details were immediately available.