Detectives investigating Boston Marathon suspect's connections to Dagestan

Detectives in Boston are looking further afield as they piece together their case against Marathon suspect Dzohkhar Tsarnaev.

They are considering the connections he and his brother Tamerlan had in the Russian republic of Dagestan - which borders Chechnya.

Edward Urazayev, a former minister who was responsible for policing terrorist activity in Dagestan, told ITV News Tamerlan Tsarnaev's radicalisation could have started on his last trip to the region.

Our correspondent Martin Geissler has travelled to Dagestan and sent this report: