Ariel Castro to cops: 'I'm coldblooded'

• Sources say Castro referred to himself as %27cold-blooded%2C%27 addicted to sex
• Castro is %27cocky%27 in interviews with police%2C showing remorse only that he was caught
• In 2004 suicide note%2C he blames the girl for their abductions

CLEVELAND -- During interrogation with police, Ariel Castro, the man charged with kidnapping and raping three women over roughly 10 years, referred to himself as "coldblooded," addicted to sex and unable to control his impulses, WKYC Channel 3 News has learned.

With exacting detail, Castro recalled the abductions of Michelle Knight, Amanda Berry and Gina DeJesus, explaining how he met each victim and even what he was wearing that day, according to sources.

Berry, 27, and DeJesus, 23, were abducted in separate incidents almost a decade ago. Michelle Knight was 22 when she was snatched from the streets in 2002.

The 6-year-old girl born in captivity to kidnapping victim Amanda Berry is the daughter of kidnapping and rape suspect Ariel Castro, Ohio Attorney General Mike DeWine said Friday.

Preliminary DNA test results confirm Castro's paternity, DeWine said in a press release.

The state's Bureau of Criminal Investigation worked through the night to process a sample of Castro's DNA received late Thursday afternoon, DeWine said. The DNA was compared to other profile's in the state's database, but did not match any other Ohio cases. The FBI will now run the sample through its database to determine whether it matches any national cases, DeWine said.

The 52-year-old unemployed school bus driver was "cocky" during the interview, showing remorse only over his capture, Channel 3 News was told.

Castro, who was arrested on Monday after Berry escaped from Castro's house with the help of neighbors and called police, was ordered held on $8 million bond Thursday by a Cleveland Municipal Court judge.

Meanwhile, in a suicide note discovered in his house by police, Castro blamed the girls for their abductions, writing that they were the ones who got into his car in the first place, the sources said. Castro did write that he wanted to give his money and possessions to the women if he was caught, the sources said.

The note appears to have been written in 2004, about the time police were investigating him on an apparently unrelated matter involving a child left on his school bus. In the note, he also mentioned his sex addiction, as well as having previously endured physical abuse as a child.

None of the abductions seemed planned, the sources said. Rather, they appeared to be crimes of opportunity.

Castro believed he would eventually be caught because he did not have "an exit plan" on how to deal with the three women and the girl he held captive in his Seymour Avenue home, the sources said. He just did not think it would be so soon.

In fact, Castro told police they had a chance to arrest him at one point but missed him, the sources said. It is unclear when that occurred.

In 2004, Cleveland Police knocked on Castro's door to investigate the case involving his school bus. A year later, a Cuyahoga County Sheriff's Deputy went to the home three times in an attempt to deliver a court summons.

Berry and DeJesus have returned home. Knight was released from MetroHealth Medical Center on Friday according to a hospital spokesperson.

Contributing: Doug Stanglin, USA TODAY, Donnald Leinwand Leger, USA TODAY; Associated Press