The inquiry into the Boston bombings continue and reports say the elder suspect Tamerlan Tsarnaev's wife Katherine Russell is cooperating and answering questions. 

19-year-old Dzhokhar Tsarnaev has also reportedly been answering questions  and based on the investigation so far, the two brothers acted alone when they planned and carried out the horrific Marathon twin bombings on April 15.

Tamerlan Tsarnaev Body May Be Claimed By Uncle Today; Mosque Won't Bury Him

No outside ties have been linked to the brothers and Dzhokhar admitted that the bombs were made after reading material from the controversial online Al-Qaida magazine Inspire, which previously ran a piece that taught readers how to 'make home-made bombs from your mom's kitchen' using pressure cookers.

Meanwhile, FBI has begun questioning members of a mosque that Tamerlan regularly attended.

Tamerlan attended the mosque in Cambridge, Mass., up until just weeks before the Boston bombings.

NBC reports that imams there told FBI that the 26-year-old had previously caused disturbances there and that they had even threatened to ban him from attending the services after a confrontation.

Mosque spokesman Yusaf Vali said they immediately called officials after they found out about Tamerlan's involvement in the crime. He called and told them: "Listen, we've got folks who knew him and if you need any information, we're here."'

In years leading up to the bombing, Tamerlan reportedly isolated himself and fell under the strong influence of a strict strain of Islam. He soon changed drastically, giving up boxing and stopped studying music and headed towards radicalism.

Three months before the Boston attacks, Tamerlan was reportedly kicked out of the mosque after a shouting match with an imam who used Martin Luther King Jr as an example of a man to emulate. The bombing suspect then accused him of being a hypocrite. Afterwards, he was asked to leave and was told that he needed to stay silent or will not be welcome there anymore.

One member of the mosque congregation, who identified himself as Muhammad, said he noticed he had anger inside.

The twin bombings at the Boston marathon finish line killed three innocent victims and injured over 200 people. The aftermath was that of a warzone and many had their limb(s) amputated.  "He had anger inside," he told LA Times. "I can't explain what was in his mind."

Tamerlan was killed in a police shootout hours after he and his brother were identified as the bombing suspects and killed a police officer at the MIT campus April 18. Dzhokhar managed to escape but within 24 hours of his brother's death, Dzhokhar was finally captured alive but in critical condition hiding in a boat behind the now-infamous residence of 76 Franklin St. in Watertown, Mass.

The whole town had been on lockdown before Dhokhar's capture and he reportedly shot himself in the mouth to avoid being captured alive.

Authorities have reported that Dzhokhar's condition has been upgraded from critical to serious and finally he is in a fair condition. He was roused just days after his capture to be charged for the crime of using a weapon of mass destruction.

Tags: boston bombings