Be it enacted by the Senate and House of Representatives in General Court assembled, and by the authority of the same, as follows:

SECTION 1. A duly sworn officer of the town of Brookline, who is authorized to exercise police powers within said town, may exercise all such police powers within 500 yards into the corporate limits of the city of Boston and the city of Newton, as if such officer were a duly sworn officer of said cities.

SECTION 2. A duly sworn officer of the city of Boston, who is authorized to exercise police powers within said city, may exercise all such police powers within 500 yards into the corporate limits of the town of Brookline and the city of Newton, as if such officer were a duly sworn officer of said town or city.

SECTION 3. A duly sworn officer of the city of Newton, who is authorized to exercise police powers within said city, may exercise all such police powers within 500 yards into the corporate limits of the town of Brookline and the city of Boston, as if such officer were a duly sworn officer of said town or city.

SECTION 4. This act shall take effect upon its acceptance by the city of Boston and the city of Newton, in the manner provided by law and upon its acceptance in the town of Brookline by a majority vote of the board of selectmen.

SECTION 5. Chapter 607 of the acts of 1979 is hereby repealed.