Viacom reportedly closed Nickelodeon Magazine this week, and will lay off about 30 staff members.

Published since 1993, the magazine regularly showcased comics and cartoonists in a section called "The Comic Book," edited in recent years by former DC Comics associate editor Chris Duffy and cartoonist Dave Roman. The two provided a mainstream, all-ages platform for cartoonists ranging from James Kochalka and Jason Lutes to Johnny Ryan and Michael Kupperman.

The section also spawned a series of one-shots called Nickelodeon Comics, and in March Nickelodeon Magazine presented its first Comics Awards.

According to The Los Angeles Times, the magazine at one time boasted a circulation of more than 1 million. However, in recent years it had lost some of its audience to the Internet, and experienced an advertising slump.

Update: Mediaweek has confirmation of the closing from Cyma Zarghami, president of Nickelodeon/MTVN Kids and Family Group.

“As I am sure everyone knows, the magazine publishing industry as a whole is severely challenged, and because of that, we have decided to exit the magazine business and will cease publishing them by the end of this year,” Zarghami said in an internal statement.