MADISON, Wis. -- As the city of Madison makes final preparations for Freakfest, news that students might congregate on Mifflin Street for an alternative Halloween party Saturday is posing a big unknown for the city.

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Downtown city Alder Mike Verveer said he will meet with the student organizers Wednesday night and ask them to pull the plug on the party. Organizers don't have a permit for the alternative party, and city leaders said they are concerned that problems will arise.

But a party co-organizer said that while his group will listen to what Verveer has to say, they will not terminate the alternative Halloween event.

May is the usual time for the annual Mifflin Street block party, which is usually mostly peaceful but has had major vandalism and rioting issues in the past.

This year, the block party could come months early as University of Wisconsin-Madison student organizers use chalk messages on sidewalks and walls, fliers and a Facebook page to advertise a Mifflin Street Halloween party they are promoting as "free and unregulated."

One party co-organizer said he and others believe the State Street Freakfest was an overreaction by the city and that the event is too tightly regulated.

"(There are) posses of cops, dozens of cops, gates everywhere, a PA system, stadium lights, cops on horseback," said Christian Von Preysing-Barry, co-organizer of the alternative Halloween party.

Party organizers said they want the Mifflin Street event to be free as well as fun, and they insist it's turning into "something big." Organizers said the event should be similar to the Mifflin Street block party.

"We should be orderly here, and we should be sane. I mean, this isn't a pretext just to have a riot," Preysing-Barry said.

City officials are closely tracking it.

"This is certainly something we're aware of and we're having conversations with some folks, but it's not anything that we're overly concerned about at this point," said Joel Plant, an aide with the mayor's office.

"Are we watching this Mifflin thing? Oh yes, we are. Hopefully, we'll talk to the people ahead of time that are planning this because, to my knowledge, I don't know that they have any kind of entertainment or anything planned for this and, to me, the lack of plan kind of speaks for itself," said Capt. Mary Schauf, of the Madison Police Department.

Preysing-Barry said he doesn't want any chaos and that he will put out messages stating that.

"We're not encouraging any (illegal activity). We oppose that," Preysing-Barry said. "The Mifflin Street party itself is going to be a boycott of State Street, and I think that's the message."

Preysing-Barry said he believes news of the alternative party has already reached about half the student body.

But Verveer said he's worried the organizers will get into unforeseen trouble and face arrests or fines.

"It's not legal to stand in the middle of the street, for example, and obstruct traffic. They certainly have not applied for any permits, and I believe it would be too late to secure any permits at this juncture," Verveer said.

Organizers said that in spite of the warning, their party will continue without a permit.

As for why organizers didn't bother applying for approval, the reason is simple.

"It's too complicated, basically. I'm just a student and I have stuff to do," Preysing-Barry said.

Organizers said they don't know how police will handle the situation, but they're hoping police will come to Mifflin Street to deter troublemakers and let people have fun.

For more Freakfest and Halloween information, visit Channel 3000's Freakfest section.