Israel on Friday evening sealed off all the main roads around Gaza, declaring them to be a closed militaryisraeli tanks gaza rockets fall in jerusalem zone amid increasing signs that Israel is readying for a ground offensive.

"There is a closed military zone in the area," a military spokesman told AFP, saying that road 232, route 10 and part of road 4 had been sealed off to all non-military traffic.

"These are the main routes around the Gaza Strip and they have been closed to traffic," he confirmed.

UPDATE: Israeli radio reports that alarms in Be'er Sheva and Ashdod have continued with high frequency into Friday evening Israel time.