Alan Long announced Monday that he will step down as mayor of Murrieta just days after his arrest on suspicion of DUI in a crash that injured four high school students.

Long made the announcement during a Monday afternoon news conference at which he expressed “concern” for the four teens injured in Thursday night’s crash at Jefferson and Lily avenues in Murrieta in southwestern Riverside County. Long, 44, was booked on suspicion of DUI causing bodily injury, according to Riverside County jail records.