Italian police have arrested seven people in connection with a match-fixing affair aimed at helping Serie B club Catania beat relegation to the country's third division.

Catania club President Antonio Pulvirenti, Vice President Pablo Consentino and ex-sporting director Daniele Delli Carri were all placed under house arrest along with two agents and two managers of online betting sites.

Reports in Italy said the seven are being held on charges of sports fraud after being accused of fixing the results of at least five of Catania's league matches last season.

Among the matches in question are Catania-Livorno, Catania-Avellino, Catania-Trapani, Catania-Latina and, in relation to another probe, Messina-Ischia.

Dubbed "the Goal Train", the scandal is just the latest in a series of affairs to hit Italian football.

Previously rocked in the past by the Calcioscommesse (2012) and Calciopoli (2006) scandals, the most recent affairs in Italy have been far less significant but have shown that match-fixing remains a problem in the lower leagues.

Last month an investigation dubbed "Dirty Soccer" by the Italian media led to 50 arrests in connection with illegal match-fixing in 31 matches, mainly in Italy's lower professional leagues.

"At least five games, maybe six were fixed and sums of money given to players," said Catania's public prosecutor Giovanni Salvi. "Other individuals are being investigated but they will remain unnamed."

Serie B president Andrea Abodi said: "My first reaction is one of great pain because we work hard every day to make sure the league is credible and to help our reputation grow.

"It has left a very bitter taste."

Catania, based in Sicily, were relegated from Serie A in 2014 and finished last season just below mid-table in Serie B.