Gaza: Israeli tanks forged into the southern Gaza Strip on Tuesday, drawing mortar fire from Palestinian fighters.

The tanks, backed by a bulldozer and military jeep, entered into the Gaza Strip, said residents and Gaza security officials.

Residents said the tanks levelled lands along the border east of the city of Rafah. It was the first ground action in a week.

The tanks did not respond to the Palestinian fire and the Israeli military said the activity was just a "routine operation".

Also on Tuesday, activist Amjad Shawwa said Israeli seafarers boarded a Palestinian fishing boat and arrested one of Gaza's foreign supporters and five Palestinian fishermen.

Shawwa identified the foreigner as Andrew Muncie of Scotland.