CARACAS, Venezuela -- The Dominican Republic threatened to pull out of this week's Caribbean Series after Montreal Expos star Vladimir Guerrero and other players were shoved by angry Venezuelan fans.

The trouble occurred early Wednesday as the team was making its way to its bus after beating Venezuela 9-5.

Club president Miguel Heded said he warned organizers that his team would leave unless security is beefed up around University Stadium. The ballpark is located in an area where crime isn't uncommon, and some officials have complained there aren't enough police to protect players, coaches and fans, especially after games ending after midnight.

"I'm not going to put my boys in danger. They either increase security or we're leaving," Heded said before Wednesday afternoon's game against Puerto Rico.

Guerrero said he and other players were threatened and shoved by fans outside the stadium.

"One guy started yelling things at me and later took a glass of beer and threw it at me," Guerrero said. "Other fans jumped in and then my teammates had to intervene. It was a scary moment."

Said Heded: "The worst thing was that the bus driver shut the door before Guerrero got in and he had no place to seek safety."

"Up to now, the organizers have fulfilled none of their promises about security. We haven't had adequate security in the hotel, in the bus or in the clubhouse. I'm tired of so much irresponsibility," he said.

With three games to go, Heded said he had given the Caribbean Baseball Confederation until Thursday to increase security and tend to other shortcomings. Organizers had no immediate response.

"We've suffered a lack of water, supplies and security. This is the worst disaster I've seen at the Caribbean Series in more than 20 years," he said.