Two Eastern European men have been arrested in connection with the explosion near Aisha Mosque in Walsall last month.
The 25-year-old and 22-year-old were arrested just before 3pm today.
Police are searching an area of Talbot Way in Small Heath and as a precaution homes have been evacuated.
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Overcast and dull, with hill fog and outbreaks of rain throughout the day.
It will be a dull, damp and cloudy day for most, with outbreaks of rain. The rain will start to ease from the west during the evening.
Cloudy this evening and overnight, with mist and hill fog becoming widespread.