Deputies from the Pulaski County Sheriff’s Office are investigating a head-on collision that occurred on 421 near the White County line around 3:30 Sunday morning. A 2007 Infiniti driven by Louis Ramiro of Monon was northbound, apparently swerved left of center and hit a 2008 Dodge driven by Phillip D. Carlson, 49, of Francesville. Carlson and his wife, Lori, 47, both refused treatment at the scene. Ramiro cut his head and was taken to the Jasper County Hospital for treatment. It’s uncertain at this time whether he was driving under the influence.