Syria’s army renewed its assault on neighborhoods in the besieged city of Homs on Tuesday after a several-day-long lull, according to local activists and videos posted on the Internet.

Video footage uploaded to Youtube on Tuesday purportedly shows the Baba Amro under heavy artillery and mortar fire, with frequent blasts and explosions going off in the distance. Several buildings were on fire and smoking amid the near-constant noise of machine-gun fire. Another video showed a rocket being shot into a residential home and a video showed dead bodies.

Syria has restricted journalists from entering Syria while electricity and telecommunications have been cut in Homs, making it nearly impossible to corroborate reports and videos from inside the country.

The Local Coordination Committees activist network said security forces renewed the “brutal shelling” for a tenth day. At least 10 people were killed in the city, they said.

The United Nations human rights chief, Navi Pillay, said on Monday that the failure of the Security Council to pass a resolution would “embolden” Syria to launch more brazen attacks on Homs and other cities. Pillay said the siege on Homs amounts to crimes against humanity, which Syria has denied.

“The Syrian army has shelled densely populated neighborhoods of Homs in what appears to be an indiscriminate attack on civilian areas,” she said, painting a grim picture of the third-largest city in Syria. The U.N. estimates that well over 5,400 people have been killed since the violence erupted in March.

The Arab League-backed resolution was blocked by Russia and China more than a week ago.

Activist Hadi al-Abdallah told Al-Jazeera that the shelling, which began on Tuesday at 5:30 a.m., was the worst in days. The shelling and rocket fire, he added, has forced people into their homes.

“Every time the international community issues a strong statement, the Syrian regime decides to take revenge on us. This is the trend we noticed,” Abdallah told the broadcaster.