Officials claimed they were backed by influential members of the Santa Cruz business community of Croatian descent. The security vice-minister, Marcos Farfan, said that police have surveillance photographs of Mr Dwyer at various public events attended by Mr Morales, including a peasant rally near Santa Cruz and a visit to naval installations on Lake Titicaca. Mr Farfan said that Mr Dwyer was "following" Mr Morales and other officials as part of the preparations for the "assassination plot". He added that police experts are analysing contents reportedly found in computers taken from the rooms in which the men were killed.