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 Police investigation has been launched after offensive graffiti was daubed on the wall of a mosque in Sandwell, West Midlands.
Council workmen removed the offensive slogan within hours of its discovery at Cradley Heath Mosque and Islamic Centre in Plant Street yesterday.
Police say a man arrested after a home-made explosive was found near a mosque in Walsall has been bailed pending further enquiries.
The 75-year-old was arrested on Thursday on suspicion of causing an explosion likely to endanger life or damage property.
Witnesses say the device exploded outside the mosque on Rutter Street last Friday night (21 June).
Despite a 'loud bang', nobody reported the explosion.
The next day debris was brought inside the mosque and police were alerted.
A major investigation involving specialist detectives and experts from the West Midlands Police Counter Terrorism Unit is continuing.
A sermon delivered to congregations in around 500 UK mosques tackling street grooming by gangs has been deemed as "very important" by Policing Minister Damian Green.
Mr Green wrote on his website: “It reminds people that the vast majority, the overwhelming majority, of British Muslims, condemn child sexual abuse as strongly as any other group in modern Britain".
Today is a historic day to stop child grooming, the chief executive of the Ramadhan Foundation has said ahead of mosques delivering sermons to hundreds of thousands of Muslims today, condemning street grooming by gangs.
Mr. Mohammed Shafiq said: "Today in hundreds of mosques across the United Kingdom Imams will deliver a sermon setting out to tackle this menace and what needs to be done.
"When I first spoke out in 2006 I was all alone, it has been a difficult journey with death threats, ridicule and personal attacks but it has all been worth it. Then the Ramadhan Foundation was on its own campaigning and now there are hundreds of Imams taking their place.
"I applaud all the Imams and the 'Together against Grooming' campaign but our work must not stop after one sermon".
Campaign group Tackle Against Grooming has issued a statement ahead of delivering sermons to hundreds of thousands of Muslims today, condemning street grooming by gangs.
In the statement by Tag:
A mosque in Leicester is taking part in the launch of a national campaign to help tackle child abuse.
The Muslim Council of Britain and 500 mosques around the country have pledged their support.
Last month, seven men from Telford were jailed for almost 50 years for sex offences. In September 2012, eight men from Derbyshire were sentenced for paying to have sex with underage children.
Detectives from West Midlands Counter Terrorism Unit have arrested a 75-year-old man after a home-made explosive was found near to a Walsall mosque.
The man was arrested at his home in Walsall at 4:30pm today on suspicion of causing an explosion likely to endanger life or damage property.
The investigation into the bomb began on Saturday when police were called to reports of a suspicious item at the Aisha mosque in Rutter Street, Walsall.
Witnesses say the device exploded outside the mosque on Friday night. Despite a 'loud bang', nobody reported the explosion.
The next day debris was brought inside the mosque and the police were alerted.The man has been taken to a police station in the West Midlands where he is being questioned by detectives. His home address is being searched as part of the investigation.