Paul, who may be unable to serve in the Senate for months while recovering at his Bowling Green home, was not at the hearing Thursday.
Boucher was released from jail on a $7,500 bond the day after the attack and ordered to stay away from the senator and his family, his neighbors for 17 years.
It was initially reported that Paul had five broken ribs and small cuts to his nose and mouth after the November 3 attack.
"Last week, Sen. Paul was vigorously assaulted by someone in his neighborhood", Stafford said.
He continued: "The first "conversation" with the attacker came after Sen".
"It was absolutely and unequivocally not about politics, not about right verses left and not about Democrat versus Republican", Baker said. This was not a 'fight, ' it was a blindside, violent attack by a disturbed person.
Baker added that Boucher has been interviewed by US Capitol Police, who he said were interested in whether the incident was politically motivated.
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Boucher is next due in court November 30 for a pre-trial hearing.
Paul writes on Twitter Wednesday: "I appreciate all of the support from everyone".
The New York Times, citing neighbors and Republican lawmakers familiar with the incident, reported that the assault stemmed from a landscaping dispute.
Boucher's lawyer said Monday that the attack was "a very regrettable dispute" that was "trivial". "As to reports of a longstanding dispute with the attacker, the Pauls have had no conversations with him in many years".
Paul tweeted Wednesday that along with six broken ribs he also has excess fluid around his lung.
Stivers is a former board member of the Homeowners Association at Rivergreen, the gated community where Senator Paul lives.
Rob Porter, a friend of the Libertarian former presidential candidate, previously said Paul was tackled when he bent over to move a tree limb while mowing the lawn.