(CNN) - the German League leaders Borussia Dortmund overcame a week medium bomb fear to stay seven points clear at the top of the Bundesliga with Hannover 4-1 victory that struck the visit to the premises of the Champions League team.
Champions Bayern Munich goes to third place with a 1-0 win over bottom team Borussia Mönchengladbach, while Bayer Leverkusen remained second after beating Kaiserslautern by the same score.
Preparations of Dortmund after the international break were interrupted when three explosive devices were discovered near the Thursday club stage, with the police arrest a man suspected of trying to sing a local company.
The team of Jurgen Klopp needed a good result after lost points in their last two games, but went behind in the 56th minute when Mohammed Abdellaoue scored at the far post corner short by Sergio Pinto.
Parcel bomb thwarted at the stage of Borussia Dortmund
However, 18-year-old Mario Gotze equalized with a superb solo project just before the hour and striker Lucas Barrios lead home a Lukasz Piszczek cross four minutes later.
The international Paraguay a 3-1 in the 73rd minute after Hanover did not clearly Gotze throughball, and Kevin Grosskreutz finished off a fine team move also involving Barrios with seven minutes to play.
Now, the means to defeat Hannover trail Bayern by a point with six rounds to play.
The Bavarians are seven points behind Leverkusen, who hold the second automatic qualifying spot for the Club of Europe's premier competition next season.
Dutch winger Arjen Robben scored the only goal of the game at home in Mönchengladbach - now four points adrift of second-bottom Wolfsburg, who host Eintracht Frankfurt on Sunday.
Robben opened the scoring on 12 minutes to play as he continued that his hot run of form since his return from injury with his ninth in 10 Championship matches.
Leverkusen kept alive the title club faint hope that midfielder Sidney Sam scored a 74-minute winner at Kaiserslautern, which have been left hovering above the relegation dog-fight.
Placed in the fifth Mainz recovered from conceding a first-minute goal to draw 1-1 at home to Freiburg, but will be joined on 45 points if Nuremberg win in Cologne in shape Sunday.
Necessary season leaders an equalizer of 74 minutes of Tunisian striker Sami Allagui after the early strike by Senegalese striker Papiss Cisse.
Placed in the seventh Hamburg drew 0-0 in Hoffenheim in the late game Saturday.
Stuttgart moved two points above the bottom three after drawing 1-1 at Werder Bremen, for whom, midfielder Torsten Frings veteran marked a leveler in the 34th minute.
St. pauli remained instead relegation playoffs after Friday home match against Schalke was cancelled when the referee assistant Thorsten Schiffner was struck by a cup full of beer in the 88th minute.
Schalke had been 2-0 ahead, with Raul and St. Pauli before marking Draxler Julian had sent, Jan - Philipp Kalla and end Bartels,.
"It's always sad to have to put an end to a game like that," referee Deniz Aytekin said the Web site of the Bundesliga. "We had no choice." Even in the first half the wizards have been affected by lighters and coins.