Two men arrested under the Terrorism Act over an explosion near a mosque in Walsall are also being questioned over a separate blast at a mosque in Tipton which scattered debris including nails around the area, West Midlands Police.
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.
A man arrested in connection with a home-made explosive found near a mosque has been released on bail.
The 75-year-old had been arrested after a device exploded outside the mosque in Walsall.
The home of a 75-year-old man is being searched by police after an explosive device was found near to a Walsall mosque last week.
The pensioner was arrested today on suspicion of causing an explosion likely to endanger life or damage property, as part of an investigation by the West Midlands Counter Terrorism Unit. He is now being questioned by detectives.
Police received reports of a suspicious item at the Aisha mosque in Rutter Street, Walsall on June 22. Witnesses say the device exploded outside the perimeter building on Friday night but not realising the significance of the “loud bang", they did not report it to police.
It was only when a member of the public recovered the debris and took it inside the mosque the following day, the police were contacted.
A 75-year-old man has been arrested on suspicion of causing an explosion likely to endanger life or damage property after a homemade explosive was found near to a mosque in Walsall last weekend, West Midlands Police said.
Counter-terror police are helping with a major hate crime investigation after a small home-made bomb exploded near a mosque. Around 150 people were evacuated from their homes in the Caldmore area of Walsall on Saturday night while bomb disposal experts made the device safe.
Police have stepped up patrols in Walsall to reassure the community, despite believing the planting of the device was an isolated incident.
West Midlands Police said it is taking the home-made explosive device found at a Walsall mosque "very seriously" and that a "major investigation" is underway.
Assistant Chief Constable Sharon Rowe said she has called in support "from all over the force", including the West Midlands Counter Terrorism Unit.
She said: "At this stage we are keeping an open mind on a motive, but have recorded it as a hate crime.
"A hate crime is any criminal act committed against a person or property that is motivated by the offender’s hatred of people because of their gender, race, religion, disability or sexual orientation.
“If there is anyone who heard the bang on Friday evening, or saw suspicious activity on Friday or Saturday, who could help the investigation, I would urge them to come forward as soon as possible".
West Midlands Police confirmed the suspicious package found at a Walsall mosque was a home-made explosive device:
BREAKING (1/2): Suspicious package found outside Walsall mosque confirmed as a home-made explosive device. http://t.co/drwEpONTAD
BREAKING (2/2): Enquiries reveal bang heard on Friday evening appears to be consistent with device going off. http://t.co/drwEpONTAD
West Midlands Police has confirmed that the suspicious package found at a mosque in Walsall is a bomb.
– Assistant Chief Constable Sharon Rowe, West Midlands Police
The force is taking this attack against the mosque very seriously and we have a major investigation underway.
At this stage we are keeping an open mind on a motive, but have recorded it as a hate crime.
West Midlands Police have confirmed that an item found by a mosque in Walsall has been 'made safe' and is being examined by technical experts.
– Superintendent Keith Fraser, the Head of Crime and Operations for Walsall Police
We have launched a full investigation into the suspicious item that has been found, and what's going to be the key to this is the public's help in relation to helping us to understand why that suspicious item was in the area.
Obviously there are going to be a number of hypotheses around this suspicious item, what I would ask is that we work with what we know at the moment. The investigation is at a very, very early stage.
Hypotheses which raise people's concern about what may or may not have happened would not be helpful at this stage. I would ask that we keep things in perspective.