The Dar al-Farooq mosque mainly serves Somalis in the Minneapolis area.
Mohamed Omar, executive director of the Muslim center serving Somalis, stated that at the time of the incident, "the mosque didn't receive any threats beforehand or claims of responsibility afterward".
Hari was charged Tuesday alongside Joe Morris, 22, and Michael McWhorter, 29, according to court papers filed in Central District of IL.
Hari, McWhorter, and Morris face federal charges in for the bombing at the Dar Al-Farooq Islamic Center as people were getting ready for prayer.
An affidavit said the criminals broke a window in the Imam's office and threw a pipe bomb which exploded, causing a fire.
Three men from rural central IL have been arrested on gun charges and a connection with the bombing of a Bloomington mosque in August 2017 and an attempted bombing of an IL women's health clinic in November 2017.
In January, another informant stated that these men were responsible for the Minnesota mosque and attempted abortion clinic bombings.
"We would look at the wall as not just a physical barrier to immigration but also as a symbol of the American determination to defend our culture, our language, our heritage, from any outsiders", said Hari in an interview previous year. According to the affidavit, Hari often stays at his parents' home because his home has no running water or electricity. According to the affidavit, law enforcement agents have gathered evidence to indicate that Hari, McWhorter and Morris were responsible for the Bloomington bombing and the attempted bombing of the Women's Health Practice, an abortion clinic, in Champaign on November 7.
Anti-Muslim incidents rose sharply in the United States in the year after the 2016 US presidential election, according to a review by the Council on American-Islamic Relations.
"This is definitely a relief that this case is finally to conclusion and those assailants-slash-suspects are apprehended and no longer a threat to our community", Hussein said in a telephone interview Tuesday.
Its national office also urged mosques and Islamic centers nationwide to increase security. However, the Federal Bureau of Investigation had offered $30,000 as reward for any information leading to the conviction of the bombing. It's unclear if the reward money will be paid.
Asad Zaman, executive director of the Muslim American Society of Minnesota, called on Minnesotans to call out anti-Muslim sentiments within the community. Mosque leaders later released security video from inside the mosque that caught the moments before the explosion, and some smoke and flying debris.
"That bombing that took place last summer has been a tragedy for all Minnesotans", said Greg Brooker, acting U.S. Attorney for the District of Minnesota.