Mairead Philpott has told Nottingham Crown Court she had no involvement with starting the fire at her Derby home or any plot leading up to the fatal blaze at 18 Victory Road.
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The 53-year-old was killed shortly after leaving her home in Mosta, Prime Minister Joseph Muscat said.
Jordi Sanchez of the Catalan National Assembly and Jordi Cuixart of the Omnium Cultural group were jailed on Monday.
Storm Ophelia continues to bring strong winds to western parts.