Zenit sack Advocaat
"Both fans and management are dissatisfied with the team's place in the Russian championship."
The 2008 UEFA Cup winners are in danger of missing out on a place in Europe next year after slumping to seventh following a 2-0 home defeat by lowly Tom Tomsk on Sunday.
Last week, Advocaat criticised the club's management over player signings and Zenit general director Maxim Mitrofanov said the infighting had affected the team's performance.
"The current situation had a negative effect on the team," Mitrofanov told the club's website on Monday.
Former Netherlands and South Korea coach Advocaat took over at Zenit in 2006, leading them to the Russian title in 2007 and the UEFA Cup the following year.
Zenit said Anatoly Davydov, the club's youth team coach, has been put in temporary charge of the first team.