About a dozen teens were arrested late Tuesday night in north Montreal after rocks were thrown at police, days after angry youth violently rioted to protest the shooting death of a young man.

Police say they also found a small cache of water bottles filled with gasoline hidden behind a local McDonald's restaurant at the intersection where the arrests were made.

Authorities said they don't have proof that the bottles are linked to the rock-throwing incident, though they said it was likely.

The area where the altercation took place, in the Riviere-des-Prairies region, is very close to where a violent riot broke out on Sunday night. Dozens of youth lit cars on fires and broke several shop windows in the Montreal North community, lashing out at law enforcement after 18-year-old Fredy Villanueva was shot dead during an altercation with police.

A police officer was shot in the leg during Sunday night's riot but is expected to make a full recovery.

Police say no one was injured in Tuesday's incident and that the suspects did not have any weapons on them when they were arrested. One police cruiser was damaged.

It is unclear if the suspects live in Montreal North or the Riviere- des-Prairies region a few kilometers away. However, authorities say they don't believe Tuesday's confrontation is connected to Sunday's violence.

"We're talking about teenagers here, 12 of them, not hundreds," said Yannick Ouimet with the Montreal police. "It looks like these people were just trying to make up any situation, any reason to be out here throwing rocks and it has nothing to do with what happened (over the weekend.)"

The suspects were released from custody after they promised to make a court appearance at a later date. They face charges of mischief and disturbing the peace.

There has been mounting tension between police and youth who live in the troubled area. The community has accused police of targeting young men with an ethnic background.

Sunday's riot affected not only police but the city's fire department as well.

Firefighters are now responding to calls with a police escort after the local fire station was pelted with rocks and bottles. During Sunday's riot, their personal cars were set ablaze and some teens tried to light a propane tank, located next to the station, on fire.

"Of seven firefighters who were working Sunday night, only one has come back to work so far," said Chris Ross, a union representative for the Montreal Fire Department. "We had our employment assistance program take charge of them immediately Monday."

He said it's not having a huge impact on day-to-day operations because other staff were brought in to make up for the shortage.

However, Ross said that traditionally the community and the station have had a good relationship and that in light of the riot, firefighters have an important message for the community.

"We're neutral," he said. "We don't care what colour you are, if you're white, black, green or blue, it's a customer service organization and we want everyone to be happy and we treat everyone equally. We're not taking sides anywhere."

He also said that the station has received many notes of thanks from the community for their efforts which remind firefighters that it's a small minority of people causing the problem.

With reports from CTV Montreal's Daniele Hamamdjian and Rob Lurie.