GUATEMALA CITY (CNN) - Software pioneer John McAfee was in a Guatemalan police hospital Thursday, just hours after officials rejected his bid for asylum.
Attorney Karla Paz said McAfee, 67, was being treated for cardiovascular problems.
Earlier Thursday, Guatemala's rejected McAfee's request for asylum, setting up his impending deportation to Belize.
McAfee's legal team said they had filed a request for an injunction with Guatemala's Supreme Court.
Standing outside the police hospital as ambulance lights flashed nearby, Paz said officials had unjustly rejected McAfee's petition without weighing the evidence.
"Due process has been violated. The right to defense has not been respected," she said.
It was unclear what medical issues could mean for McAfee, or the efforts of investigators in Belize to question him about his neighbor's shooting death.
If McAfee is deported, investigators plan to take him in for questioning upon his return, Belize police spokesman Rafael Martinez said.
Belize authorities have said they want to talk to McAfee about the November 11 shooting of his neighbor, American businessman Gregory Faull. Under Belize law McAfee can be held for 48 hours without charges, Martinez said.
Guatemalan authorities took McAfee into custody Wednesday on accusations of entering the country illegally.
After weeks in hiding, the 67-year-old Internet security pioneer emerged publicly Tuesday in Guatemala's capital, hundreds of miles from the Caribbean island in Belize where his next-door neighbor was found dead.
McAfee had requested asylum in Guatemala, arguing that he left Belize to escape police persecution.
But Guatemalan authorities found there was no basis for his asylum request, presidential spokesman Francisco Cuevas said Thursday.
McAfee founded his namesake computer security software in 1987, initially running it out of his home in California. He sold his stake in McAfee Associates in 1994 and moved to Belize in 2008.