By Daniel Wallis and Deisy Buitrago
CARACAS | Wed Jan 23, 2013 4:55pm EST
(Reuters) - Venezuelan Vice President Nicolas Maduro said unidentified groups had entered the country with the aim of assassinating him and the head of the National Assembly as President Hugo Chavez recovers from cancer in Cuba.
Maduro provided no proof of the claim, made at a rally on Wednesday to mark the end of a dictatorship in the OPEC nation 55 years ago, but he said action would be taken shortly.
"For several weeks we've been following groups that have infiltrated the country with the aim of making attempts on the life of (Assembly head) Diosdado Cabello and my own," Maduro told a crowd of red-shirted "Chavista" supporters. "They will not manage it against either of us."