VALENCIA, Venezuela (AP) — President Nicolas Maduro vowed that a band of anti-government fighters who attacked a Venezuelan army base will get the “maximum penalty” as his administration roots out his enemies.

Troops killed two of the 20 intruders who slipped into the Paramacay base in the central city of Valencia early Sunday, apparently intent on fomenting a military uprising, Maduro said in his weekly broadcast on state television.

One of the invaders was injured, seven captured and 10 got away, the embattled leader said.

“We know where they are headed and all of our military and police force is deployed,” Maduro said. He said he would ask for “the maximum penalty for those who participated in this terrorist attack.”

The attack came as Venezuela’s controversial constitutional assembly is getting down to work, signaling in its initial decrees last week that delegates will target Maduro’s foes as he had warned.