By Roseanne Tellez

CHICAGO (CBS) — Chicago police nabbed 81 suspects overnight, most of the suspects already known to police.

Twelve firearms were seized.

It’s a familiar story, and once again, Superintendent Eddie Johnson was pleading for help, asking lawmakers to stiffen penalties for repeat gun offenders.

“Where are our state legislators, and when are they going to pass the laws necessary to send a message to these individuals that s it’s not OK to commit these crimes on our streets?” Johnson said during a news conference Friday.

Chicago’s police superintendent says the numbers show these criminals just keep at it.

Of 81 arrests overnight, 65 were on the “Strategic Subject List,” 61 of them convicted felons and 49 were documented gang members.

Of the 12 weapons seized, one was a “machine gun capable of firing 40 to 50 rounds in just a matter of seconds,” Chief Anthony Riccio said.

Johnson says the raid won’t eradicate all of the violence, but is a “step in the right direction.”

Investigators are now at work trying to determine how these suspects may be tied to recent crimes.

There are another 40 outstanding warrants.