San Diego police reported 40 felony arrests and nine misdemeanor arrests from a nearly four-week enforcement operation around the College Area at the start of the school year. The department said Friday that its Eastern Division worked with San Diego State University Police during evening and overnight hours from Aug. 19 through Sept. 12.

The agencies also recovered four firearms and filed four driving-under-the-influence charges, according to the release. Personnel handled nearly 150 calls for service, including party complaints. SDPD described the deployment as a response to the annual rise in vehicle and pedestrian traffic, large gatherings and police calls when students return to the neighborhood.

One traffic stop led officers to a man wanted on a vehicle-theft warrant. Police said they found about 35 grams of a crystalline substance and roughly $45,000 in cash during the investigation, producing additional allegations involving the sale and transportation of controlled substances. The release did not identify the man, the substance or the court case connected to the arrest.

In another incident, undercover officers said they saw an adult man gathering with young people for a motel party. Officers detained him and found 11 juveniles in the room, according to SDPD. The department reported evidence of underage drinking and nitrous oxide use, followed by felony and misdemeanor arrests and multiple protective-detention reports. It did not state how many charges from the operation arose from that incident.

A separate traffic stop produced an arrest after a records check found five active misdemeanor warrants for a female passenger, police said. Officers reported recovering pepper spray, a switchblade, a controlled substance, paraphernalia and more than 70 pills without a prescription. The public summary did not list the pills or explain which possession allegations were filed.

Those omissions matter. Arrest totals are enforcement outputs, not convictions, and the release does not show how prosecutors screened the cases or how many people account for the 49 reported arrests. No arrested person was named in the public summary. It also offers no comparison with last year's operation, no cost for the added deployment and no neighborhood-level breakdown of calls. The numbers therefore describe what officers did, not whether the operation produced a durable change in safety.

The calendar explains the department's focus. The College Area concentrates campus travel, rental housing and late-night activity in a street network that also carries commuters. SDPD said previous starts to the school year brought crashes, alcohol- and drug-related violations, assaults and vandalism. Coordinating with the campus department extends the enforcement footprint across jurisdictions, but the release does not spell out how duties or overtime were divided.

SDPD called the effort proactive and credited Eastern Division and university police. The accountability trail now runs through booking records, charging decisions and any public after-action comparison the agencies produce. Without those later records, 40 felony arrests is a large headline number with limited context. The next useful measure is how many cases proceed, what conduct they address and whether calls decline after the extra patrol period ends.