Maduro said he wouldn't give in to opponents and again urged them rejoin negotiations.
One police officer was killed and two guards were wounded. Some civilians also sustained minor injuries.
Venezuela's opposition renewed nationwide protests on Thursday to pressure President Nicolas Maduro to hold election.
Amelia Bannan was nearly six months pregnant when she suffered a skull fracture that resulted in a blood clot in her brain.
Clinical trials begun in 2006 to test the efficacy of scorpion venom in cancer treatment.
Four months into the peace agreement’s implementation, the rebel army has handed in less than 200 rifles to U.N. peacekeepers according to Colombian officials.
The donation topped that of some U.S. corporate giants including Pepsi ($250K) and Walmart ($150K).
Anti-government protesters and politicians accuse President Nicolas Maduro of sliding towards dictatorship.
GM has been the market leader in Venezuela for over 35 years.
Violence is feared, as the political tension in the crippled South American has reached a peak not seen since 2014.