Two men were in critical condition Monday after a crash involving a scooter and bicycle east of Conroe. 

Around 2 a.m., a man driving a scooter ran into the rear of a bicycle another man was riding on Old Highway 105, near Security, according to a report by the Montgomery County Police reporter. 

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Both vehicles had no lighting, the report states. 

The two men were transported to HCA Houston Healthcare Conroe with head injuries. 

The Texas Department of Public Safety is investigating the crash. 

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