Lawyer who blamed Guatemala 's president for two slayings was killed Sunday . The lawyer had been in the country to represent a client accused of killing his wife and daughter, according to local media reports. President should step aside during inquiry , says man who lost '07 presidential race . `` We want an impartial investigation , a transparent investigation , '' Perez told CNN . `` The president must leave his post . '' President blames deaths on people he says want to bring down his government .
Lawyer who blamed Guatemala 's president for two slayings was killed Sunday . The lawyer had been in the country to represent a client accused of killing his wife and daughter, according to local media reports. President should step aside during inquiry , says man who lost '07 presidential race . President blames deaths on people he says want to bring down his government .