LONDON (AFP) - German centre-back Per Mertesacker and long-serving Czech midfielder Tomas Rosicky have extended their contracts at Arsenal, the Premier League title contenders announced on Tuesday.

Mertesacker, 29, has established himself as a first-team regular since signing from Werder Bremen in August 2011, while 33-year-old Rosicky is now in his eighth season at the club.

Arsenal did not disclose the length of either player's contract extension.

"We are delighted that Mertesacker and Rosicky have committed their futures to the club," said manager Arsene Wenger. "They are players of exceptional quality and experience, and have consistently proven themselves at the highest level.

"There is a great feeling of togetherness and belief in the group and this news will only help to strengthen this further."

Mertesacker has made 110 appearances for Arsenal, scoring five goals, and has captained the team this season in the absence of Thomas Vermaelen and Mikel Arteta.

Rosicky has made 209 appearances, scoring 24 goals.

Arsenal are currently four points behind leaders Chelsea in the Premier League with 10 games of the season remaining. They are due to face Everton in the quarter-finals of the FA Cup on Saturday and trail Bayern Munich 2-0 after the first leg of their last 16 tie in the Champions League.