The latest story from the Associated Press has new information on Boston bombing suspect Tamerlan Tsarnaev’s trip to Russia in 2012.

Investigators are now focusing on the trip that Tsarnaev made to Russia in January 2012 that has raised many questions. His father said his son stayed with him in Makhachkala, the capital of Dagestan, where the family lived briefly before moving to the U.S. a decade ago. The father had only recently returned.

“He was here, with me in Makhachkala,” Anzor Tsarnaev told The Associated Press in a telephone interview. “He slept until 3 p.m., and you know, I would ask him: ‘Have you come here to sleep?’ He used to go visiting, here and there. He would go to eat somewhere. Then he would come back and go to bed.”

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A woman who works in a small shop opposite Tsarnaev’s apartment building said she only saw his son during the course of one month last summer. She described him as a dandy.

“He dressed in a very refined way,” Madina Abdullaeva said. “His boots were the same color as his clothes. They were summer boots, light, with little holes punched in the leather.”

Anzor Tsarnaev said they also traveled to neighboring Chechnya. “He went with me twice, to see my uncles and aunts. I have lots of them,” the father said.

He said they also visited one of his daughters, who lives in the Chechen town of Urus-Martan with her husband. His son-in-law’s brothers all work in the police force under Chechen leader Ramzan Kadyrov, he said.

AP also reports that one of the known terrorist organizations in the region has denied responsibility for the attack:

No evidence has emerged since to link Tamerlan Tsarnaev to militant groups in Russia’s Caucasus. On Sunday, the Caucasus Emirate, which Russia and the U.S. consider a terrorist organization, denied involvement in the Boston attack.