CONCORD, Calif. (KCBS) – The step-grandfather of a 2-year-old Concord boy killed Thursday by three of the man’s pit bulls spoke for the first time in jailhouse interviews with reporters Friday.

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52-year-old Steven Hayashi wept as he talk about the boy, identified as Jacob Bisbee, and the attack at the family’s home on the 1700 block of Trailcreek Court Thursday.

Hayashi said he arrived home after an outing with his son and found a number of police cars at his home. Police told him there that his grandson had been mauled by his dogs and Hayashi’s wife said the boy did not survive the attack.

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Hayashi said neither he nor his wife know how the boy managed to get into the garage where the dogs were kept, since the door was normally locked. “Somehow Jacob managed to get into the garage,” said Hayashi. “Both me and my wife do not fully understand how he was in the garage.”

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Hayashi also said his wife had asked him to get rid of the dogs after they killed a chihuahua he also owned, but he refused because he loved them, adding that he will never own any dogs again. “I think pit bulls should be banned, permanently,” said Hayashi.

“I’ve never been in jail before. I never had anybody die like this. Or died period, for that matter. So yesterday, I was in shock. Today, it’s starting to be more emotional. It’s hard for me to sleep. Especially when a 2-year old boy is killed, my grandson, and my life is ruined.”

Two other pit bulls were in the yard but were not involved in the attack. All five pit bulls have since been euthanized according to police.

Hayashi has been charged with felony child endangerment and possessing a mischievous animal that causes death.

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Hayashi was being held on $125,000 bail. It was not known if Hayashi had hired an attorney.