Police in the West Midlands say they are hunting a serial bomber of mosques.
They have linked three attacks across the area in recent weeks.
One of the devices, which exploded close to a mosque in Wolverhampton last month, has only just been found.
From the West Midlands ITV News correspondent Juliet Bremner reports:
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Six-month-old Leena Belkadi and her sister Malak Belkadi, aged eight, both died from inhalation of fire fumes, an inquest has heard.
The true number of those believed to be dead or missing and presumed dead following the fire won't be known until the end of the year.
Low pressure will keep much of the British Isles under cloud with many seeing periods of steady rain throughout the rest of today.