( CNN ) -- Three people have been detained for questioning in Belize in the weekend killing of Gregory Faull , a neighbor of Internet pioneer John McAfee , who was being sought for questioning , police said . The detentions are routine in such investigations , said Raphael Martinez , a spokesman for the National Police in the Central American country . Faull , 52 , was found dead with a gunshot wound to the back of the head on Sunday in his home near San Pedro Belize , on the Caribbean island of Ambergris Caye , Martinez said . Faull was killed after four of 11 dogs belonging to McAfee were fatally poisoned , said Wired Magazine Contributing Editor Joshua Davis , who said he had spent more than 100 hours with McAfee in recent months . Faull had frequently complained about the dogs barking , Davis said . `` The dogs were poisoned on Friday night , they died very quickly , '' Davis said . `` Sometime between Saturday night and Sunday morning , Mr. Faull was killed . '' Martinez said a person working for McAfee called police Saturday about a poisoned dog ; when police arrived at McAfee 's residence , they found the dogs had been buried . Martinez said there had been `` some sort of misunderstanding '' before Saturday between McAfee and Faull about the dogs . McAfee , 67 , told Davis on Tuesday that he did not kill his neighbor , the reporter said . `` He says that he 's had very little contact with Greg over the past three years , '' Davis said . `` They 've spoken maybe 50 words total . Nonetheless , there was antagonism there . McAfee admits that . '' McAfee told Davis that , when police visited his home on Sunday , he hid from them . `` McAfee saw them coming and he dug a hole in the sand and buried himself in the sand , he says , and he put a cardboard box over his head so he could breathe , '' Davis said . `` He said it was extremely uncomfortable , but he believes that the police will kill him if he turns himself in . '' `` My goodness , '' Martinez said when asked about McAfee 's reported fear . `` He needs to come in so that we can clear the air . We are law-abiding people here . We follow the laws to the letter . We believe at this point that he has absolutely no fear of being killed by anybody . '' McAfee is not a suspect , Martinez said . He is a person police want to talk with `` to clarify the situation , to allay the fears of everybody that perhaps he is indeed involved in the murder of his neighbor , '' whose house is about 300 yards away , Martinez said . Investigators were pursuing multiple leads , he added . On Wednesday , police said they had filed weapons charges against McAfee 's bodyguard , William Mulligan , 29 , and Mulligan 's wife , Stefanie Mulligan , 22 . The two are accused of keeping a firearm and ammunition without a license . They were arrested on McAfee 's property , police said . In a telephone interview with Davis that was posted on Wired 's website , McAfee said Tuesday morning that he was hiding from authorities . `` Obviously , given enough time , they will track me down , '' he said . `` It 's just a matter of time . In the meantime I 'd like to get out as much information as I can about the wrongs in this country . '' He said a number of the country 's political figures were corrupt . McAfee has a history of problems with the government , Davis said . In April , a gang-suppression squad raided one of his properties and charged him with running a methamphetamine lab and illegal arms possession , Davis said . The charges were dropped . `` Ever since then , McAfee thinks he 's been harassed by the police , '' Davis said . `` And I directly confronted him on this and I said , 'Maybe you 're paranoid . ' He talks about police hiding in bushes and stalking . '' Davis said he `` wondered if there was something bad that was going to happen . '' `` I do agree that he is a very eccentric multi-millionaire and I also felt fear with him , '' he said . McAfee founded the Internet security company that bears his name , but left it in 1994 , said company spokeswoman Kimberly Eichorn . McAfee graduated in 1967 with a degree in mathematics from Roanoke College , according to the Virginia school . He went on to found several tech companies and to launch groundbreaking products , including the voice-recognition system Interpath Inc. in 1981 , McAfee in 1988 , and the instant messaging pioneer Tribal Voice in 1996 . Faull , a construction contractor from central Florida , moved this year to Belize `` to transition to more adventures based in Belize , '' his family said in a statement . Several years ago , he had bought a house on Ambergris Cay in Belize that had been damaged in a hurricane , the family said . `` Greg worked part-time for the past three years to rebuild the home , '' it said . `` He recently completed work and had the property ready to offer as a vacation rental when he was murdered . '' CNN 's Karen Smith and Alan Duke contributed to this report .
The detentions are routine in such investigations , police say . McAfee acknowledges differences with the neighbor , Wired 's Joshua Davis says . McAfee is a `` very eccentric multi-millionaire '' who founded an Internet security firm . McAfee left the firm he founded in 1994 .