The neighbor, Alicia Stivers, said Rene Boucher, the next-door neighbor who is accused of assaulting Paul, harbored a grudge against the Kentucky senator for spoiling his lakeside view because Paul's trees were "in the way." Boucher was upset that the trees were "devaluing" his home, a $740,000 property he has been trying to sell for a decade, Stivers told the publication.
Stivers was the first person who came to Paul's aid after the November 3 attack in his Kentucky hometown of Bowling Green, according to the Daily Mail.
The Daily Mail, citing property records, said Boucher has tried to sell his house five times within the past 10 years without success.
See images of Rand Paul throughout the years:
DES MOINES, IA - FEBRUARY 1: Senator Rand Paul (R-TX) speaks during a caucus day rally at his Des Moines headquarters on February 1, 2016 in Des Moines, Iowa. The Presidential hopeful was accompanied by his wife, Kelly, mother, Carol Wells and his father, former Congressman Ron Paul. Pauls were there to thank all the staff and volunteers for all their hard work in Iowa. (Photo by Pete Marovich/Getty Images)
WASHINGTON, DC - FEBRUARY 16: U.S. President Donald Trump, right, acknowledges US Senator Rand Paul (R-KY), left, prior to signing H.J. Res. 38, disapproving the rule submitted by the US Department of the Interior known as the Stream Protection Rule in the Roosevelt Room of the White House on February 16, 2017 in Washington, DC. The Department of Interior's Stream Protection Rule, which was signed during the final month of the Obama administration, 'addresses the impacts of surface coal mining operations on surface water, groundwater, and the productivity of mining operation sites,' according to the Congress.gov summary of the resolution. (Photo by Ron Sachs-Pool/Getty Images)
U.S. Senator Rand Paul (R-KY) and other members of the House Freedom Caucus hold a news conference on Capitol Hill in Washington, U.S. March 7, 2017. REUTERS/Eric Thayer
Senator Rand Paul (R-KY) arrives for a classified briefing on the airstrikes launched against the Syrian military, at the U.S. Capitol in Washington, U.S., April 7, 2017. REUTERS/Aaron P. Bernstein
U.S. Republican presidential candidate and Rand Paul speaks at a campaign rally in the Olmsted Center at Drake University in Des Moines, Iowa, January 28, 2016. REUTERS/Brian C. Frank/File Photo
Senator Rand Paul (R-KY) and wife, Kelly, arrive on the red carpet for the annual White House Correspondents Association Dinner in Washington, U.S., April 30, 2016. REUTERS/Jonathan Ernst
U.S. Republican presidential candidate Senator Rand Paul talks to supporters at a campaign stop at the National Sprint Car Hall of Fame and Museum in Knoxville, Iowa, January 29, 2016. REUTERS/Scott Morgan
Senator Rand Paul (R-KY) speaks to the media about repealing Obamacare after playing golf with U.S. President Donald Trump at the White House in Washington, U.S., April 2, 2017. REUTERS/Joshua Roberts
Republican U.S. presidential candidates (L-R) U.S. Senator Rand Paul, Governor Chris Christie, Dr. Ben Carson, Senator Ted Cruz, Senator Marco Rubio, former Governor Jeb Bush and Governor John Kasich pose together onstage at the start of the debate held by Fox News for the top 2016 U.S. Republican presidential candidates in Des Moines, Iowa January 28, 2016. REUTERS/Jim Young
U.S. Republican presidential candidate and U.S. Senator Rand Paul speaks at the New Hampshire GOP's FITN Presidential town hall in Nashua, New Hampshire January 23, 2016. REUTERS/Mary Schwalm
U.S. Republican presidential candidate Senator Rand Paul takes a photo with Scott Blum of Monroe, Iowa, after speaking at a campaign stop at the National Sprint Car Hall of Fame and Museum in Knoxville, Iowa, January 29, 2016. REUTERS/Scott Morgan
WASHINGTON, DC - MARCH 07: Sen. Rand Paul (R-KY) (C) speaks about Obamacare repeal and replacement while flanked by members of the House Freedom Caucus, during a news conference on Capitol Hill, on March 7, 2017 in Washington, DC. The House of Representatives is currently working on a replacement for the Affordable Care Act. (Photo by Mark Wilson/Getty Images)
U.S. Republican presidential candidate Senator Rand Paul (R-TX) fires an AR-15 rifle at CrossRoads Shooting Sports in Johnston, Iowa, January 17, 2016. REUTERS/Aaron P. Bernstein
UNITED STATES - FEBRUARY 16: Sen. Rand Paul, R-Ky., attends a Senate Foreign Relations Committee hearing in Dirksen Building featuring testimony by David Friedman, nominee to be U.S. Ambassador to Israel, February 16, 2017. (Photo By Tom Williams/CQ Roll Call)
WASHINGTON, DC - JANUARY 19: Sen. Rand Paul and Kelley Paul attend the Capitol File 58th Presidential Inauguration Reception at Fiola Mare on January 19, 2017 in Washington, DC. (Photo by Paul Morigi/Getty Images for Capitol File Magazine)
UNITED STATES - FEBRUARY 15: Sen. Rand Paul, R-Ky., speaks during the House Freedom Caucus news conference on Affordable Care Act replacement legislation on Wednesday, Feb. 15, 2017. Behind Sen. Paul from left are Rep. Tom, Garrett, R-Va., Rep. Mark Sanford, R-S.C., Rep. Mark Meadows, R-N.C., and Rep. Jim Jordan, R-Ohio. (Photo By Bill Clark/CQ Roll Call)
WASHINGTON, DC - SEPTEMBER 28: Kelley Paul and her husband, U.S. Senator Rand Paul, at the National Gallery of Art on September 28, 2016 in Washington, DC. (Photo by Shannon Finney/Getty Images)
UNITED STATES - AUGUST 6: Sen. Rand Paul (R-KY) speaks at the annual Fancy Farm Picnic in Fancy Farm, Ky., on Saturday, Aug. 6, 2016. (Photo By Bill Clark/CQ Roll Call)
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The latest explanation for the attack comes after neighbors initially said the grievance was over Paul blowing leaves and trimmings into Boucher's yard. Paul seemed to toss cold water on that rationale by tweeting out a pair of stories in conservative outlets that cast doubt on that line of reasoning.
Some online commentators have pointed to Boucher's politics as an explanation for the attack, as he is an outspoken Democrat. But Boucher, through his lawyer, has vehemently denied that the incident had anything to do with politics.
Paul returned to the Senate on Monday following a brief absence because of his injuries.