Israel launched air strikes near Lebanon's eastern city of Baalbek on Monday, security sources said, the second raids in the region since cross-border hostilities began after the Gaza war.

Since October 8, the day after the war broke out in the Gaza Strip, Hamas ally Hezbollah and its arch-foe Israel have exchanged near-daily fire.

The strikes have been largely contained to the border between Israel and Lebanon -- although Israel has on occasion launched strikes elsewhere in Lebanon.

"Israeli aircraft targeted a former Hezbollah building near Dar al-Amal Hospital," a security source told AFP, adding that Israel "conducted another raid on a warehouse west of Baalbek."

Another security official confirmed the strikes, as media reports said there were casualties.