Midfielder Geremi, who had been influential throughout, then dealt his team a fatal blow.
Owen punished the miss when he headed in a Geremi cross at the far post.
Cameroon's Patrick Mboma went close with a few headers and in injury time Geremi Fotso Njitap hit the upright.
Eto'o's compatriot Geremi has two Champions Leagues from his time with Real Madrid.
"Geremi has paid his dues to this club and it was by mutual consent that he left the club, " Kenyon said.
BBC: SPORT | Football | African | Chelsea put freeze on Africans
And by the break Almunia had made a decent save from Geremi's low free-kick and brilliantly cleared Taylor's header from a corner.
The Hammers defence dithered as they attempted to clear Geremi's long throw.
Kenyon denied the suggestion that Cameroonian midfielder Geremi was released this week to Newcastle to help their squad problems during the Nations Cup.
BBC: SPORT | Football | African | Chelsea put freeze on Africans
Mohamed Gedo punished Geremi's poor back-pass to put Egypt in front before Hassan was awarded their third, despite his free-kick not crossing the line.
With back-to-back wins under their belt, Newcastle could afford to relax a little and Geremi and Martins worked well to generate some effective early pressure.
But Owen showed his customary clinical form in front of goal shortly afterwards when he converted Geremi's cross to send the home crowd into raptures.
Inter Milan striker Eto'o effectively made the result safe in the 52nd minute when he headed home Geremi's corner as Cameroon finished top of the group.
Chelsea boss Mourinho immediately sent on Geremi for Joe Cole, and also replaced the injured Hernan Crespo with Didier Drogba at the start of the second half.
Interim manager Joe Kinnear moved Martins out to the left wing, leaving Ameobi alone upfront where he battled hard to win free-kicks from which Geremi occasionally threatened.
The goal came after Charles N'Zogbia gave away possession close to his own goal - but his team almost equalised immediately through Geremi's header from James Milner's cross.
Geremi swung over a dipping corner and, as the ball arched rapidly towards his feet, Dunne failed to adjust his body and volleyed the ball into the top corner of his own goal.
Fabio Collocini had to snuff out danger from that pair on 10 minutes, just before Newcastle midfielder Geremi went close with a 25-yard free-kick awarded after Tal Ben Haim hacked down Obafemi Martins.
应用推荐