- In Aleppo province, security forces storm a home and kill a family, group says
- Attacks come a day after violence flares at Aleppo University
- The university is one of several where protests have erupted recently
- New attacks cast doubts on regime's willingness to comply with peace plan
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(CNN) -- Syrian forces opened fire on various towns Friday, activists said, as the opposition planned mass protests after prayers to continue the revolt against President Bashar Al-Assad.
At least 16 people were killed, including three in Homs and three in Aleppo, where security forces clashed with students a day earlier, according to the opposition Local Coordination Committees of Syria.
In Anadan town in Aleppo province, security forces stormed a home and killed a man, his wife and son, the opposition group said. Local activists said they will be buried after Friday prayers.
In Damascus Countryside province, forces raided homes in Qaboun town, activists said.
The new attacks come a day after violence flared at the sprawling Aleppo University in the country's largest city, one of several schools where anti-government protests have erupted recently.
Security forces killed 32 Syrians nationwide Thursday, including seven at the university, the coordination committees said.
CNN cannot independently verify reports of violence and deaths within Syria because the government has restricted access by most of the international media.
The latest attacks cast new doubts about the regime's willingness to comply with a peace plan by Kofi Annan aimed at ending the 14-month uprising.
But the head of the U.N. mission in Syria, Gen. Robert Mood, said the government is allowing the observers access and the team has seen more commitment to the cease-fire plan.
"What my observers have seen is that, in specific locations, we have seen more commitment on the ground by the government," Mood said. " We are seeing positive signs on the ground."
The cease-fire went into effect April 12 and is part of a six-point peace plan negotiated by Annan, a U.N. and Arab League joint special envoy.
Annan's plan includes allowing humanitarian groups access to the population, releasing detainees, starting a political dialogue and withdrawing troops from city centers -- a mandate the government has not met, according to the United Nations.
Dozens of unarmed military observers are in Syria with a total of 300 expected in the country by the end of the month to monitor the cease-fire and the peace plan.
Syria's protests started peacefully in March last year, but a government crackdown spawned violence that has left thousands dead and prompted some military defectors to take up arms against the regime forces. The government has consistently blamed the violence on "armed terrorists."
The United Nations estimates that at least 9,000 people have died in the conflict while opposition groups put the death toll at more than 11,000.
CNN's Amir Ahmed and Joe Sterling contributed to this report.
