Venezuela's government is willing to help investigate a plot to assassinate Colombian President Ivan Duque, in which three Venezuelan nationals arrested in Colombia may be suspects, foreign minister Jorge Arreaza said.

The alleged assassination attempt comes amid tense relations between the two neighboring South American countries. Duque has been a strong critic of the socialist government of Venezuela's President Nicolas Maduro, who he calls a "dictator," and Maduro regularly accuses Duque of plotting to overthrow him.

In a late Saturday night statement, Arreaza said Venezuela was willing to provide "the necessary police and intelligence cooperation" and had asked Colombian authorities for more information on the three Venezuelans arrested.