City workers uncovered a seventh razor blade that had been planted in the grass at a heavily used play area at a Mission Beach park, San Diego police said Monday.
Six blades were initially found Sunday at the Bonita Cove Park, but a sweep of the area with a metal detector turned up another one on Monday morning, police Officer Dan Lasher said.
Razor blades have been discovered in the park at least four times over the past 18 months.
The first of Sunday's blades were found around 12:15 p.m. in the park, next to West Mission Bay Drive at Mission Boulevard, police said. No injuries were reported, Lasher said.
At least three razor blades were found stuck in the grass with sharp edges facing up on Sept. 13. No one was injured in that incident.
In late April, 19 blades were found in the park's grass. A 7-year-old boy and a 15-year-old boy cut their feet on the razor blades, which police said had been intentionally planted.
And in August 2013, a 41-year-old woman was cut by one of a half-dozen blades left at the park.
Bonita Cove Park is across the street from Belmont Park and next to a popular swimming area. It's heavily used by children.
Tom Jackson, who said he's been going to the park for more than 40 years, was there on Monday morning. He said he's occasionally seen broken bottles in a Mission Beach parking lot but never thought someone would put razor blades in the grass where children play.
"It makes no sense to me," Jackson said. "I can't think of why someone would do that."
