(CNN) -- Guatemalan President Alvaro Colom has dismissed an allegation that he was behind the death of a lawyer who left a video blaming the president if anything happened to him. 

A video with Rodrigo Rosenberg appears on YouTube in which he accuses Guatemala's leader in his death. 

The lawyer, Rodrigo Rosenberg, was shot and killed Sunday while riding a bicycle in Guatemala City. 

On Monday, a video surfaced in which Rosenberg -- seated behind a desk and calmly speaking into a microphone -- linked Colom and an aide to his death. 

"If you are watching this message," Rosenberg said on the video, "it is because I was assassinated by President Alvaro Colom, with help from Gustavo Alejos," the president's private secretary. Rosenberg mentions a third person who he believes would have been involved in his death and also mentions those three people as well as the president's wife in connection with two killings last month. 

In a broadcast to the nation Monday night, Colom denied any connection. 

"We categorically reject the accusations that pretend to tie the president, first lady and private secretary as those responsible for this assassination," Colom said. 

A dated and signed transcript of the video's content indicates Rosenberg made the recording last week. It surfaced Monday after his funeral, and was posted on YouTube and distributed to other media outlets by the newspaper El Periodico de Guatemala. 

Rosenberg's video said he was targeted for talking about the death of prominent businessman Khalil Musa and his daughter in April. 
Who's the president of Guatemala?
What is he accused of?
Why is he being accused?
Where is the video?
What's the lawyer's name?
When was he killed?
How?
Where?
What was he doing at the time?
Did Rosenberg accuse the president of being behind other deaths?
How many other deaths?
When did they occur?
Why did Rosenberg believe he would be killed?
Who was Khalil Musa?
When was he killed?
Who does Rosenberg say helped the president?
What's his job?
When did the president address the country?
How did Rosenberg appear in the video?
Was he yelling?
Alvaro Colom
Guatemalan President Alvaro Colom
being behind the death of a lawyer
Alvaro Colom has dismissed an allegation that he was behind the death of a lawyer who left a video blaming the president if anything happened to him. 
the lawyer left a video blaming the president if anything happened to him
the death of a lawyer who left a video blaming the president if anything happened to him
YouTube
A video with Rodrigo Rosenberg appears on YouTube in which he accuses Guatemala's leader in his death. 
Rodrigo Rosenberg
The lawyer, Rodrigo Rosenberg
Sunday
The lawyer, Rodrigo Rosenberg, was shot and killed Sunday
He was shot
The lawyer, Rodrigo Rosenberg, was shot and killed 
Guatemala City
Rodrigo Rosenberg, was shot and killed Sunday while riding a bicycle in Guatemala City. 
riding a bicycle
Rodrigo Rosenberg, was shot and killed Sunday while riding a bicycle in Guatemala City
Yes
Rosenberg mentions a third person who he believes would have been involved in his death and also mentions those three people as well as the president's wife in connection with two killings last month
Two
Rosenberg mentions a third person who he believes would have been involved in his death and also mentions those three people as well as the president's wife in connection with two killings last month.
Last month
in connection with two killings last month.
for talking about the death of Khalil Musa and his daughter
Rosenberg's video said he was targeted for talking about the death of prominent businessman Khalil Musa and his daughter in April
a prominent businessman
the death of prominent businessman Khalil Musa
in April
the death of prominent businessman Khalil Musa and his daughter in April.
Gustavo Alejos
President Alvaro Colom, with help from Gustavo Alejos
the president's private secretary
Gustavo Alejos," the president's private secretary
Monday night
In a broadcast to the nation Monday night, Colom denied any connection.
seated behind a desk
a video surfaced in which Rosenberg -- seated behind a desk
No
Rosenberg -- seated behind a desk and calmly speaking