ISLAMABAD, Pakistan (Reuters)  A Pakistani court on Saturday issued an arrest warrant for former President Pervez Musharraf in connection with the 2007 assassination of Benazir Bhutto, a former prime minister and his rival.

The authorities did not provide details of their accusations against Mr. Musharraf, who left under the threat of impeachment in 2008 and has been living in exile in London and Dubai.

In October, Mr. Musharraf apologized to Pakistan for what he characterized as mistakes he made in office, and he said he would return to the country as the new head of a political party in time for elections due by 2013.

The arrest warrant might keep him from returning to the country, where Ms. Bhutto’s husband, Asif Ali Zardari, is now president and struggling to cope with multiple challenges, including a stubborn Taliban insurgency and a stagnant economy.