Toronto police say there is so far no evidence to suggest an incident early Tuesday morning in which shots were fired near the G20 security zone had anything to do with the upcoming summit.

Police are searching for a black luxury vehicle after shots were fired into the air in the Entertainment District around 3:30 a.m.

The vehicle sped away after four shots were fired. Police confirmed later Tuesday the incident occurred outside the G20 security perimeter and investigators do not consider it to be connected to the summit.

About a dozen off-duty RCMP officers, who were in the area and heard the shots, rushed to a nearby parking lot where the vehicle sped off.

"We're not sure if (the vehicle) is connected or if it's a coincidence that it was the same timing," Sgt. Tim Burrows said.

No arrests have been made.

A massive security initiative is underway in the downtown core, in preparation for the G20 summit which begins on July 26.

Over the weekend police discovered a cache of weapons -- including broken up cinder blocks and homemade weapons -- stashed under some bushes in a downtown park near the security zone, Sgt. Burrows said.

"Under normal circumstances it wouldn't be too much of a concern for our personnel, but given the heightened state of awareness and security, we want to minimize any potential weaponry for people to arm themselves with."

Sgt. Burrows would not elaborate on the kind of weapons that were found.

"They were homemade weapons that could cause injury…we're not giving too many details on that," he said.

Police have already begun questioning pedestrians, cyclists and drivers entering the traffic zone -- an area surrounding the fencing near the Toronto Convention Centre.

Police are asking for patience from drivers as protesters rally throughout the downtown core.

Traffic was disrupted Monday afternoon while a protest moved from Allan Gardens down Sherbourne Street, west on Dundas Street East and then north on Yonge Street before finally dispersing onto Isabella Street.

"In terms of the protests, we welcome anybody and we will work with protesters who have a lawful and peaceful intent.

"It's a right by the Charter of Rights and Freedoms and those are one of the things that we protect at all costs," he said.

"What we don't want is the protesters who want to cause damage and destruction and general lawlessness."

So far protests have been peaceful, he said. A 24-year-old man was arrested and charged with possession of marijuana.

Officials are trying to make citizens aware of disruptions and are asking for patience.

"This is going to on for a few days and we know it, but it's one of those things. There are those people who want to protest, they have that right and we'll protect that right as well."

A demonstration called A Theatrical Kiss-in will be held Tuesday at Yonge and Queen Streets around 4:30 p.m.

"In terms of the G20, what's (the Kiss-in) got to do with the G20? It is illegal and punishable by death in many countries around the world to be lesbian, gay or bisexual. So (this) is a way for people to make comment on the role the G20 could take in having leadership," one protester told CTV.

With a report from CTV's Jim Junkin