A second man has been arrested in connection with the death of the former television personality George Gilbey.
The self-employed electrician, 40, was working in Shoeburyness, Essex, on 27 March, when he fell through a skylight.
Essex Police said a man, 36, from Witham, had been arrested on suspicion of gross negligence manslaughter.
A 47-year-old man, also from Witham, who was held over the same offence, has since been released under investigation, the force said.
The second arrested man was still in custody, officers said.
The force added that a joint investigation with the Health and Safety Executive remained ongoing.
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