Butler County traffic investigators are working to find the cause of the second deadly accident in the county this week. A 24-year-old man was killed when he lost control of his 2008 Honda and crashed into a tree as he was traveling southbound on the 7000 block of State Line  Road around 6:49am Tuesday morning.  Although the accident happened on the Ohio side of the road, crews from the Drewsburg fire department in Franklin County, Indiana were called to the scene. On Sunday, a tree vs. SUV crash claimed the life of 21-year-old Austin McGuire on US-127 between Hamilton and New Miami. Police say impairment was a factor in Sunday's crash, but not in Tuesday's accident.